Bibliografías temáticas / Reptiles, Fossil

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Literatura académica sobre el tema "Reptiles, Fossil"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 31 de julio de 2024

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Artículos de revistas sobre el tema "Reptiles, Fossil"

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Tay, Michael A. "Problems in the Curation of Fossil Marine Reptiles". Geological Curator 4, n.º 2 (abril de 1985): 65–67. http://dx.doi.org/10.55468/gc737.

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The majority of the large fossil marine reptiles stored in British museums are ichthyosaurs, plesiosaurs and crocodiles collected from the Liassic beds of England. Many of these specimens were recovered during the nineteenth century from manually operated quarries, especially those at Street in Somerset and at Barrow-on-Soar in Leicestershire. Others came from coastal exposures at Lyme Regis, or at Whitby where there were also large alum shale quarries (Howe e^ �l. 1981; Benton and Taylor 1984). Many of the more complete skeletons are now in the major collections held by the British Museum (Natural History), Oxford University Museum, and the Sedgwick Museum, Cambridge. The remainder, however, are scattered throughout the provincial museums of Britain and Ireland and often form the bulk of their fossil reptile collections. Virtually every specimen suffers from one of the three most prevalent problems affecting such fossils: poor data, poor standards of preparation and poor display techniques. In discussing these problems, those aspects peculiar to marine reptiles will be examined.
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Dalton, Rex. "Fossil reptiles mired in controversy". Nature 451, n.º 7178 (enero de 2008): 510. http://dx.doi.org/10.1038/451510a.

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Benton, Michael J. "Fossil reptiles from ancient caves". Nature 337, n.º 6205 (enero de 1989): 309–10. http://dx.doi.org/10.1038/337309b0.

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Bocherens, Herve, Donald B. Brinkman, Yannicke Dauphin y André Mariotti. "Microstructural and geochemical investigations on Late Cretaceous archosaur teeth from Alberta, Canada". Canadian Journal of Earth Sciences 31, n.º 5 (1 de mayo de 1994): 783–92. http://dx.doi.org/10.1139/e94-071.

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Microstructural and chemical composition studies on fossil reptile teeth from Upper Cretaceous localities of Alberta, Canada, show that the quality of preservation exhibits great variability within a formation, as well as within a locality or even a single tooth. The chemical composition of fossil enamel is close to that of modern enamel, whereas the chemical compositions of fossil and modern dentine are very different. It seems that fossil enamel may have retained some paleodietary information in its chemical composition, whereas dentine, as well as bone, likely did not. Paleodietary interpretations may thus be drawn from the chemical composition of some elements in tooth enamel, such as strontium, but more studies on recent reptiles are urged for comparison.
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Buffetaut, Eric, Jianjun Li, Haiyan Tong y He Zhang. "A two-headed reptile from the Cretaceous of China". Biology Letters 3, n.º 1 (19 de diciembre de 2006): 81–82. http://dx.doi.org/10.1098/rsbl.2006.0580.

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A malformed embryonic or neonate choristoderan reptile from the Lower Cretaceous Yixian Formation of northeastern China is described. The tiny skeleton exhibits two heads and two necks, with bifurcation at the level of the pectoral girdle. In a fossil, this is the first occurrence of the malformation known as axial bifurcation, which is well known in living reptiles.
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Modesto, Sean P., Diane M. Scott y Robert R. Reisz. "Arthropod remains in the oral cavities of fossil reptiles support inference of early insectivory". Biology Letters 5, n.º 6 (julio de 2009): 838–40. http://dx.doi.org/10.1098/rsbl.2009.0326.

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Inference of feeding preferences in fossil terrestrial vertebrates (tetrapods) has been drawn predominantly from craniodental morphology, and less so from fossil specimens preserving conclusive evidence of diet in the form of oral and/or gut contents. Recently, the pivotal role of insectivory in tetrapod evolution was emphasized by the identification of putative insectivores as the closest relatives of the oldest known herbivorous amniotes. We provide the first compelling evidence for insectivory among early tetrapods on the basis of two 280-million-year-old (late Palaeozoic) fossil specimens of a new species of acleistorhinid parareptile with preserved arthropod cuticle on their toothed palates. Their dental morphology, consisting of homodont marginal dentition with cutting edges and slightly recurved tips, is consistent with an insectivorous diet. The intimate association of arthropod cuticle with the oral region of two small reptiles, from a rich fossil locality that has otherwise not produced invertebrate remains, strongly supports the inference of insectivory in the reptiles. These fossils lend additional support to the hypothesis that the origins and earliest stages of higher vertebrate evolution are associated with relatively small terrestrial insectivores.
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PAXTON, C. G. M. y D. NAISH. "DID NINETEENTH CENTURY MARINE VERTEBRATE FOSSIL DISCOVERIES INFLUENCE SEA SERPENT REPORTS?" Earth Sciences History 38, n.º 1 (1 de abril de 2019): 16–27. http://dx.doi.org/10.17704/1944-6178-38.1.16.

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ABSTRACT Here we test the hypothesis, first suggested by L. Sprague De Camp in 1968, that “After Mesozoic reptiles became well-known, reports of sea serpents, which until then had tended towards the serpentine, began to describe the monster as more and more resembling a Mesozoic marine reptile like a plesiosaur or a mosasaur.” This statement generates a number of testable specific hypotheses, namely: 1) there was a decline in reports where the body was described as serpent or eel-like; 2) there was an increase in reports with necks (a feature of plesiosaurs) or reports that mentioned plesiosaurs; and 3) there was an increase in mosasaur-like reports. Over the last 200 years, there is indeed evidence of a decline in serpentiform sea serpent reports and an increase in the proportion of reports with necks but there is no evidence for an increase in the proportion of mosasaur-like reports. However, witnesses only began to unequivocally compare sea serpents to prehistoric reptiles in the late nineteenth century, some fifty years after the suggestion was first made by naturalists.
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Nicholls, Elizabeth L. y Dirk Meckert. "Marine reptiles from the Nanaimo Group (Upper Cretaceous) of Vancouver Island". Canadian Journal of Earth Sciences 39, n.º 11 (1 de noviembre de 2002): 1591–603. http://dx.doi.org/10.1139/e02-075.

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A new fauna of fossil marine reptiles is described from the Late Cretaceous Nanaimo Group of Vancouver Island. The fossils are from the Haslam and Pender formations (upper Santonian) near Courtenay, British Columbia, and include elasmosaurid plesiosaurs, turtles, and mosasaurs. This is only the second fauna of Late Cretaceous marine reptiles known from the Pacific Coast, the other being from the Moreno Formation of California (Maastrichtian). The new Nanaimo Group fossils are some 15 million years older than those from the Moreno Formation. However, like the California fauna, there are no polycotylid plesiosaurs, and one of the mosasaurs is a new genus. This reinforces the provinciality of the Pacific faunas and their isolation from contemporaneous faunas in the Western Interior Seaway.
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Giffin, Emily B. "Gross spinal anatomy and limb use in living and fossil reptiles". Paleobiology 16, n.º 4 (1990): 448–58. http://dx.doi.org/10.1017/s0094837300010186.

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The spinal quotient (S.Q.) is an osteologically defined estimate of the enlargement of the spinal cord at limb levels over that at interlimb levels. It is an efficient predictor of limb use in living reptiles and birds and may be used to predict limb function in fossil vertebrates. Among living reptiles, this ratio of limb to interlimb innervation is greatest in arboreal genera, followed by terrestrial sprawlers, aquatic forms, and undulatory forms. Birds show a wide range of brachial S.Q. values that are roughly commensurate with flight ability. S.Q. values for the manipulative forelimbs of some dinosaurs fall well above those of locomotory limbs. Dinosaur hind-limb values are either well within ranges predicted by living reptiles and birds (most taxa), or highly inflated (stegosaurs, sauropods). This inflation may be the result of presence of a glycogen body similar to that of birds. In no case does the lumbosacral S.Q. support the presence of a “sacral brain.”
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Farlow, James O. y Thomas R. Holtz. "The Fossil Record of Predation in Dinosaurs". Paleontological Society Papers 8 (octubre de 2002): 251–66. http://dx.doi.org/10.1017/s108933260000111x.

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Predatory theropod dinosaurs can usually be identified as such by features of their jaws, teeth, and postcrania, but different clades of these reptiles differed in their adaptations for prey handling. Inferences about theropod diets and hunting behavior based on functional morphology are sometimes supported by evidence from taphonomic associations with likely prey species, bite marks, gut contents, coprolites, and trackways. Very large theropods like Tyrannosaurus are unlikely to have been pure hunters or scavengers, and probably ate whatever meat they could easily obtain, dead or alive. Theropods were not the only dinosaur hunters, though; other kinds of large reptiles undoubtedly fed on dinosaurs as well The taxonomic composition of dinosaurian predator-prey complexes varies as a function of time and geography, but an ecologically remarkable feature of dinosaurian faunas, as compared with terrestrial mammalian faunas, is the very large size commonly attained by both herbivorous and carnivorous dinosaurs. The K/T extinction event(s) did not end dinosaurian predation, because carnivorous birds remained prominent predators throughout the Cenozoic Era.
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Tesis sobre el tema "Reptiles, Fossil"

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Gower, David John. "Morpholgy and relationships of the earliest archosaurs". Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240791.

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Gleed-Owen, C. P. "Quaternary herpetofaunas of the British Isles : taxonomic descriptions, palaeoenvironmental reconstructions, and biostratigraphic implications". Thesis, Coventry University, 1998. http://curve.coventry.ac.uk/open/items/8ee6cd03-3f4f-aef0-7889-1b1783d4efd5/1.

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This project aims to study fossil amphibian and reptile (herpetofaunal) remains from Quaternary sites in the British Isles. This neglected group of vertebrates hold great potential for Quaternary Science. Collectively, they cover a wide range of ecological tolerances, although individual species often have very specific tolerances. The biology and ecology of individual species are discussed (Chapter 2) to facilitate their use in Quaternary palaeoenvironmental reconstructions, and an account of previous work on fossil herpetofaunas is given (Chapter 3). Very little work on fossil herpetofaunas has been carried out in the British Isles, mainly due to a lack of the required osteological expertise. The preparation and study of a modern osteological collection (Chapter 4), for comparative purposes, has therefore constituted a large and essential part of the project. The resulting manual for the identification of fossil herpetofaunal remains, appropriately illustrated with SEMs and hand-drawn figures, is presented (Chapter 5). The difficulties encountered in identifying some taxa are discussed in detail, and points of caution are stressed where necessary.
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Renaut, Alain Joseph. "A re-evaluation of the cranial morphology and taxonomy of the Triassic dicynodont genus Kannemeyeria". Thesis, University of the Witwatersrand, 2000. http://hdl.handle.net/10539/19499.

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The genus Kannemeyeria is one of the most important and distinctive taxa of the Triassic dicynodonts. It became the first Triassic dicynodont known to science, and thus forms the benchmark for the comparison of the evolution and morphology of other Triassic dicynodonts. An understanding of this genus forms an integral part of the biozonation of the Beaufort Group, and is pivotal in influencing the interpretation of the evolution, physiology and phylogenetic relationships of the Triassic dicynodonts. This study focuses on the detailed cranial morphology and relationships of the Kannemeyeria, and uses a rigorous morphological investigation as the basis for a meaningful elucidation of the functional and thus physiological aspects of this dicynodont. The descriptions demonstrate that variations related to the skull size, distortion or naturally occurring variation within the genus allow for the synonymy of the formerly recognised species K. latifrons Broom (1898; 1913), K. erithrea Haughton (1915) and K. wilsoni Broom (1937). This conclusion is further supported by the allometric analysis which cannot distinguish the variation observed in the holotypes with that occurring naturally within a growth series. Apart from the large specimen, the other smaller individuals are accommodated in the genus as different ontogenetic stages of the growth series represented by K. simocephalus Weithofer (1888). Several allometric variables show unusual patterns of development, indicating that Kannemeyeria can be subdivided into ontological classes, as juvenile and adult forms, separated from each other by a particular level of development. An age-related threshold level is suggested, and considered to represent an animal reaching sexual maturity. It is consequently proposed that the Kannemeyeria population was, at an age-related level, subdivided into sexually mature and immature groups but remained ecologically homogeneous. Both the descriptions and the allometric analysis of the species K. cristarhynchus Keyser & Cruickshank (1979) clearly indicate that it does not conform to the growth series of K. simocephalus and thus the differences observed between these two taxa are not constrained to size increases. Consequently, the recognition of the species K. cristarhynchus is considered valid. From the observations of the cranial morphology, tested using an allometric analysis, generic and specific diagnoses are constructed for Kannemeyeria and its two African species. Several features of Kannemeyeria are discussed in a functional context. A corrugated hom-covered snout and large caniniform processes are considered to be associated with defence and posturing behaviour. Several features of the braincase also suggest herding behaviour. Kannemeyeria also has a slightly different occipital musculature arrangement than that proposed for many other dicynodonts. Most Kannemeyeria cranial features are related to its masticatory function. From the analysis of masticatory cycle it is clear that the jaw action is described via a single pivot-point, which in Kannemeyeria approached the original, primitive position of the jaw hinge. The vertical orientation of the articulation and this pivot-point ensured that the muscle action during second phase of mastication produced an upward crushing and grinding action instead of the typical fore-and-aft motion of many other dicynodonts. It also meant that the muscle force was at their maximum, and little or no energy was lost to translation of the moment arm at the jaw articulation. Consequently, the Kannemeyeria masticatory cycle was both highly effective and extremely efficient. The morphology, and resultant physiology, of Kannemeyeria skull is considered to represent the innovative foundation for much of the success of many of the later Triassic dicynodonts.
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Lin, Kebang. "Functional morphology and phylogeny of Keichousaurus hui (Sauropterygia, Reptilia". Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28485.

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Keichousaurus hui Young, 1958, from the Middle Triassic of Guizhou, China is a small sauropterygian reptile. It has short snout and elongated temporal openings resembling the European pachypleurosaurid Dactylosaurus. Unlike all the other sauropterygians, the parietal opening is anteriorly positioned. The neck is long and flexible. The body is rigid and the bones are pachyostotic. It has two or three sacral vertebrae. The most striking feature of Keichousaurus is its broad ulna. The entire forelimb has the outline of a paddle or an oar, and may have functioned like one. There is noticeable sexual dimorphism, as is the case for Alpine pachypleurosaurids. The growth of the humerus is highly positive allometric, indicating an important role of the forelimb in locomotion. The horizontal orientation of the pectoral girdle indicate that Keichousaurus, as well as other pachypleurosaurids, was not a subaquatic flyer. Instead, a drag-based regime was followed in locomotion. The symmetrical rowing of the forelimbs precludes lateral undulatory movement of the body. However, vertical undulation is theoretically possible. The reassessment of the phylogenetic position of Keichousaurus hui confirmed that it is a member of the monophyletic group Pachypleurosauroidea.
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Liu, Jun y 刘俊. "Middle Triassic mixosaurid ichthyosaurs from SW China". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hdl.handle.net/10722/211049.

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Mixosaurid ichthyosaurs (mixosaurs) are a dominant group of Middle Triassic marine reptiles that was widely distributed in both Tethyan and Panthalassic terranes. They are represented by many excellently preserved specimens from all around the world and have been studied for more than one hundred years. Even so, their morphology is not adequately known. The systematics of mixosaurs is not well understood and their phylogeny has been controversial. The nomination of several Chinese mixosaurs makes the situation even worse. This thesis aims to provide a comprehensive review of Chinese mixosaurs and discuss their phylogenetic relationships. The detailed anatomy of only valid Chinese mixosaurid species Mixosaurus panxianensis is well established in this thesis. Its ontogenetic changes are also noted and a better diagnosis is given. A new morphotype of mixosaurs from a recently discovered fossil Lagerst?tte, the Luoping biota, is described in detail. This morphotype is similar to M. panxianensis but consistent differences are also present. The ecological comparison to M. panxianensis demonstrates that this morphotype represents a new taxon that is different from M. panxianensis. A nearly complete and articulated specimen of Phalarodon atavus from the Middle Triassic Luoping biota, Yunnan, South China is described. This is the first specimen of P. atavus discovered outside the Germanic Basin. The discovery of this specimen demonstrates a cosmopolitan distribution of P. atavus across the whole Tethyan ocean. The new specimen is also the first one preserving the postcranial anatomy of this species, providing the potential to evaluate its swimming ability for the first time. Functional morphology shows that this species is well adapted for a pursuit attack of prey, consistent with the distribution pattern of the species. Tooth crown morphology suggests that P. atavus may prefer externally soft prey such as belemnoids. Mixosaurs are divided into three ontogenetic stages based on the humeral morphology. The juvenile stage is characterized by a textured dorsal humeral shaft surface. The subadult stage is characterized by a smooth humeral shaft in dorsal view with a rugose humeral head. The adult stage is characterized by a smooth humeral head. The consistent presence of the surface texture of ventral humeral shaft is most probably caused by the strong muscle insertion presumably related to the function of steering of the fore fins in mixosaurs. Five morphotypes of Chinese mixosaurs are recognized in this study. Twenty-five more or less new characters are introduced to evaluate the phylogenetic relationships of mixosaurian-like specimens from China. The monophyly of mixosaurs including all studied Chinese morphotypes is well corroborated. Further investigation on the mixosaurs from Monte San Giorgio is recommended to resolve the phylogenetic relationships of mixosaurs.
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Earth Sciences
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Doctor of Philosophy
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6

Albright, Gavan McBride. "A reinterpretation of the small Captorhinid Reptile Captorhinikos Parvus Olson as a new genus, reanalysis of its cranial anatomy, and a phylogenetic analysis of the basal reptilian family Captorhinidae". CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2178.

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The cranial anatomy of the basal captorhinid reptile Captorhinikos parvus (Reptilia, Captorhinidae), is reinterpreted here based on analysis of a group of new specimens recovered subsequent to its original diagnosis as well as further analysis of the original specimens utilized in E.C. Olson's original characterization of the species. Structural features inconsistent with the generic description suggest the redefinition of C. parvus as a new genus, Rhodotheratus parvus. Analyses of basal members and selected derived members support the characterization of Rhodotheratus as a distinct taxon.
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Wideman, Natalia Kazimiera. "The postcranial skeleton of the family Limnoscelidae and its taxonomic implications for understanding basal amniotes". CSUSB ScholarWorks, 2002. https://scholarworks.lib.csusb.edu/etd-project/2254.

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The Diadectomorpha is a central taxon in understanding the origin and early evolution of amniotes. It is considered a sister taxon to Amniota and is so similar to amniotes that some researchers have placed it within the Amniota itself. This group is composed of three families: the Limnoscelidae, the Tseajaiidae, and the Diadectidae. Being the most basal member of this group, the family Limnoscelidae is especially important in these studies.
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Bernard, Aurélien. "Reconstitution des variations saisonnières de paléotempérature par l’étude du δ18O des dents de vertébrés actuels et fossiles". Thesis, Lyon 1, 2010. http://www.theses.fr/2010LYO10011/document.

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L’étude de la composition isotopique de l’oxygène de l’émail des dents de vertébrésconstitue une méthode fiable de reconstitution des paléotempératures, grâce àl’interdépendance entre le δ18O de l’apatite des dents, le δ18O des fluides corporels, del’eau ingérée et la température du milieu. L’amélioration et la miniaturisation des techniquesanalytiques a permis d’augmenter la résolution du signal reconstitué, depuis les variations detempérature sur de grandes échelles de temps jusqu’aux variations saisonnières durant laformation de la dent. Cependant, ces variations du δ18O de la dent ne sont pas uniquementdépendantes des variations de température du milieu, mais peuvent également êtreaffectées par d’autres paramètres climatiques, comme la répartition des précipitations aucours de l’année, ou biologique, comme le mode de minéralisation de la dent, l’alimentation,la physiologie de l’animal ou des migrations.Les paramètres biologiques peuvent être estimés dans le cas de taxons possédantdes parents proches dans la faune actuelle. Par exemple, la connaissance des processus deformation et de minéralisation des dents de bovinés actuels permet d’interpréter le signalisotopique de l’oxygène enregistré dans les dents de bovinés fossiles. Ainsi, l’analyse dedents de Bison priscus provenant de l’aven de Coudoulous (Lot, France) a permis dereconstituer les variations saisonnières de température au cours de l’avant-dernier épisodeglaciaire (MIS 6) au Pléistocène moyen, lorsque la région servait de terrain de chasse àHomo neanderthalensis. Le climat était à cette époque plus froid de 4°C en moyenne, maisavec des saisons nettement plus contrastées. Ainsi, si les températures estivales étaientidentiques aux valeurs actuelles, les températures hivernales étaient plus basses de 6-7°C.En milieu marin, les variations saisonnières de température affectent uniquement leseaux de surface. Les plaques dentaires de myliobatidés, un groupe de raies pélagiquesvivant principalement entre 0 et 100 mètres de profondeur, sont un outil potentiel pourreconstituer la paléosaisonnalité. L’étude de plaques dentaires de Myliobatis et deRhinoptera actuels montre que la composition isotopique des dents de ces animauxenregistre des variations de température et de δ18O des eaux de surface. Ainsi, il est doncpossible de reconstituer les caractéristiques des masses d’eau traversées par l’animal. Cetoutil a également un intérêt paléoécologique car il permet de mettre en évidence d’éventuelscomportements migratoires, comme chez certains myliobatidés actuels. L’étude despécimens d’Aetomylaeus provenant du Pliocène de Montpellier (Hérault, France) montredes températures 5°C plus élevées par rapport aux v aleurs actuelles
The oxygen isotopic composition of the vertebrate tooth enamel is a reliable proxy toreconstruct paleotemperatures based on the dependence of the δ18O of the tooth apatite onthe δ18O of body fluids, on the δ18O of the drinking water, and on the environmentaltemperature. The improvement and the miniaturization of the analytical procedures allowedincreasing the resolution of the reconstructed signal, from paleotemperature variations overgeological times to seasonal variations during the tooth growth. However seasonal variationsof the enamel δ18O do not only depend on temperature variations but can also be influencedby other climatic parameters such as rainfall distribution over the year, or by biological andecological parameters such as tooth mineralization process, diet, physiology or migratorypatterns.Biological parameters can be estimated based on the study of extant relatives inmodern faunas. For example, data on tooth formation and mineralization processes inmodern bovids allow a better understanding of the oxygen isotopic signal recorded in fossilbovid teeth. Thus reconstruction of seasonal variations of temperature during the penultimateglacial episode (MIS 6) has been made possible from the analysis of Bison priscus teethfrom the aven of Coudoulous (Lot, France). Climate was 4°C colder during the middlePleistocene when Europe was still Homo neanderthalensis hunting ground, and seasonswere more contrasted than today. Summer temperatures were similar to modern values, butwinter temperatures were 6-7°C colder.In marine environments, seasonal variations of temperature only affect surfacewaters. Myliobatids are pelagic rays living mostly between 0 and 100 m depth, thus theoxygen isotopic composition of myliobatid dental plates is a potential proxy to reconstruct thepaleoseasonality. The isotopic analysis of modern Myliobatis and Rhinoptera samplesconfirmed that variations of the sea-surface temperature (SST) and the δ18O of seawater arerecorded in the δ18O of myliobatid teeth. Thus it is possible to reconstruct the variations ofseawater temperature during a part of the animal’s life, but it also allows pointing outmigratory patterns in some myliobatid species. Reconstructions of seasonal variations ofSST during the middle Pliocene in Montpellier (Hérault, France) from the δ18O of myliobatiddental plates yielded paleotemperatures 5°C higher than modern values
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Oliveira, Alessandro Marques de [UNESP]. "Paleofauna de vertebrados, com ênfase em répteis e mamíferos, dos depósitos quartenários da região da Serra da Bodoquena, Mato Grosso do Sul, Brasil". Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/92869.

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A Serra da Bodoquena apresenta cavernas calcárias, com restos fossilizados da megafauna pleistocênica. Poucos trabalhos foram feitos para a região abordando este tema, até o momento. Neste contexto, a presente dissertação de mestrado teve por objetivos realizar a identificação dos fósseis de vertebrados dos depósitos espélicos e fluviais da região. Em seguida foram feitas as análises tafonômicas no material. O material analisado é constituído por fósseis retirados do leito do Rio Formoso, Gruta das Fadas e Gruta Forever. Os grupos identificados correspondem a Alligatoridae, Mylodontidae, Megatheriidae, Glyptodontidae, Myrmecophagidae, Hominidae, Caviomorpha, Ursidae, Gomphotheriidae, Toxodontidae, Tayassuidae e Cervidae. Para a primeira localidade, as coletas se deram por meio de sucção dos sedimentos do leito do rio, durante obras do Gasoduto Bolívia-Brasil, em 1995. O material analisado apresentou alto grau de fragmentação. Na Gruta das Fadas foram feitas coletas superficiais em 2006, e os fósseis estudados apresentaram diferentes graus de abrasão, alguns ossos menores estando fragmentados, enquanto os maiores estão completos. Muitos estão friáveis, parcialmente permineralizados. Foram observadas preservações de tecidos não resistentes em um fêmur humano. Na Gruta Forever foram realizadas escavações em dois pontos diferentes, com 1 m2 e 2 m2 de áreas respectivamente, atingindo profundidades máximas de 10 cm, com a identificação de fósseis. Os fósseis apresentam alto grau de corrosão química e fragmentação. Parte deste material parece ter sido transportado por enxurradas para o interior da gruta. Possivelmente águas acidificadas, provenientes de chuvas, causaram dissoluções sobre a superfície dos ossos. Todos os fósseis estão permineralizados. Futuramente estudos sobre a História Geológica desta gruta poderão ajudar no entendimento...
The Bodoquena Plateau shows calcareous caves, with fossilized remains of the Pleistocenic Megafauna. Few investigations have been implemented to the region, approaching this subject. In this context the present Master Dissertation intends to identify vertebrate fossils from caves and fluvial deposits from this region. There have been made taphonomics analysis on the materials and evaluated their contexts. These materials are fossils removed from Formoso River, and the caves “Gruta das Fadas” and “Caverna Forever”. The groups identified are Alligatoridae, Mylodontidae, Megatheriidae, Glyptodontidae, Myrmecophagidae, Hominidae, Caviomorpha, Ursidae, Gomphotheriidae, Toxodontidae, Tayassuidae and Cervidae. In the first site the collect were made through suctions of sediments during works of the “Gasoduto Bolivia-Brasil” construction, in 1995. The material analyzed showed high degree of fragmentations. Inside “Gruta das Fadas” were performed surface samplings in 2006, and the fossils studied showed different degrees of abrasions, some small specimens are fragmented and larger are completed. Many are crumbly, few remains not permineralized. Preservations of soft tissues were evidenced in some of these materials, on the human femur, for instance. Inside “Gruta Forever” were made excavations in two different points, with 1m2 and 2m2 areas respectively, achieving maxima depths of 10 cm. The fossils show high degree of chemical corrosion and fragmentation. Some of these materials appears to have been transported through pluvial process inside this cave. Presumably acidified waters, from rains, have caused dissolutions on bones surfaces. All these materials seem completely permineralized. Future studies about Geological History of this cave can help understand its depositional processess. Thus, the knowledge generated from this work... (Complete abstract click electronic access below)
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Oliveira, Alessandro Marques de. "Paleofauna de vertebrados, com ênfase em répteis e mamíferos, dos depósitos quartenários da região da Serra da Bodoquena, Mato Grosso do Sul, Brasil /". Rio Claro, 2013. http://hdl.handle.net/11449/92869.

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Orientador: Reinaldo José Bertini
Coorientador: Francisco Sekiguchi de Carvalho e Buchmann
Banca: Mirian Liza Alves Forancelli Pacheco
Banca: Paulo Milton Barbosa Landin
Resumo: A Serra da Bodoquena apresenta cavernas calcárias, com restos fossilizados da megafauna pleistocênica. Poucos trabalhos foram feitos para a região abordando este tema, até o momento. Neste contexto, a presente dissertação de mestrado teve por objetivos realizar a identificação dos fósseis de vertebrados dos depósitos espélicos e fluviais da região. Em seguida foram feitas as análises tafonômicas no material. O material analisado é constituído por fósseis retirados do leito do Rio Formoso, Gruta das Fadas e Gruta Forever. Os grupos identificados correspondem a Alligatoridae, Mylodontidae, Megatheriidae, Glyptodontidae, Myrmecophagidae, Hominidae, Caviomorpha, Ursidae, Gomphotheriidae, Toxodontidae, Tayassuidae e Cervidae. Para a primeira localidade, as coletas se deram por meio de sucção dos sedimentos do leito do rio, durante obras do Gasoduto Bolívia-Brasil, em 1995. O material analisado apresentou alto grau de fragmentação. Na Gruta das Fadas foram feitas coletas superficiais em 2006, e os fósseis estudados apresentaram diferentes graus de abrasão, alguns ossos menores estando fragmentados, enquanto os maiores estão completos. Muitos estão friáveis, parcialmente permineralizados. Foram observadas preservações de tecidos não resistentes em um fêmur humano. Na Gruta Forever foram realizadas escavações em dois pontos diferentes, com 1 m2 e 2 m2 de áreas respectivamente, atingindo profundidades máximas de 10 cm, com a identificação de fósseis. Os fósseis apresentam alto grau de corrosão química e fragmentação. Parte deste material parece ter sido transportado por enxurradas para o interior da gruta. Possivelmente águas acidificadas, provenientes de chuvas, causaram dissoluções sobre a superfície dos ossos. Todos os fósseis estão permineralizados. Futuramente estudos sobre a História Geológica desta gruta poderão ajudar no entendimento... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The Bodoquena Plateau shows calcareous caves, with fossilized remains of the Pleistocenic Megafauna. Few investigations have been implemented to the region, approaching this subject. In this context the present Master Dissertation intends to identify vertebrate fossils from caves and fluvial deposits from this region. There have been made taphonomics analysis on the materials and evaluated their contexts. These materials are fossils removed from Formoso River, and the caves "Gruta das Fadas" and "Caverna Forever". The groups identified are Alligatoridae, Mylodontidae, Megatheriidae, Glyptodontidae, Myrmecophagidae, Hominidae, Caviomorpha, Ursidae, Gomphotheriidae, Toxodontidae, Tayassuidae and Cervidae. In the first site the collect were made through suctions of sediments during works of the "Gasoduto Bolivia-Brasil" construction, in 1995. The material analyzed showed high degree of fragmentations. Inside "Gruta das Fadas" were performed surface samplings in 2006, and the fossils studied showed different degrees of abrasions, some small specimens are fragmented and larger are completed. Many are crumbly, few remains not permineralized. Preservations of soft tissues were evidenced in some of these materials, on the human femur, for instance. Inside "Gruta Forever" were made excavations in two different points, with 1m2 and 2m2 areas respectively, achieving maxima depths of 10 cm. The fossils show high degree of chemical corrosion and fragmentation. Some of these materials appears to have been transported through pluvial process inside this cave. Presumably acidified waters, from rains, have caused dissolutions on bones surfaces. All these materials seem completely permineralized. Future studies about Geological History of this cave can help understand its depositional processess. Thus, the knowledge generated from this work... (Complete abstract click electronic access below)
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Libros sobre el tema "Reptiles, Fossil"

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Wexo, John Bonnett. Reptiles. San Diego, Calif: Wildlife Education, 1989.

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Benton, M. J. y P. S. Spencer. Fossil Reptiles of Great Britain. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4.

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Benton, M. J. Fossil reptiles of Great Britain. London: Chapman & Hall, 1995.

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Llamas, Andreu. The great marine reptiles. New York: Chelsea House, 1996.

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Martin, Sander. Reptilien. Stuttgart: Enke, 1994.

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1952-, Schleich Hans-Hermann, ed. Amphibien und Reptilien aus dem Känozoikum Eurasiens =: Cenozoic amphibians and reptiles from Eurasia. Frankfurt am Main: Senckenbergische Naturforschende Gesellschaft, 1994.

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Holman, J. Alan. Pleistocene amphibians and reptiles in Britain and Europe. New York: Oxford University Press, 1998.

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ill, Martínez Albert, ed. Los reptiles primitivos. New York: Chelsea House Publishers, 1996.

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Porter, Keith. Reptiles through the ages. Lexington, Mass: Schoolhouse Press, 1986.

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Lin, Kʻo-pang. Functional morphology and ontogeny of Keichousaurus hui (Reptilia, Sauropterygia). Chicago, Ill: Field Museum of Natural History, 1998.

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Capítulos de libros sobre el tema "Reptiles, Fossil"

1

Benton, M. J. y P. S. Spencer. "British Carboniferous fossil reptile sites". En Fossil Reptiles of Great Britain, 13–15. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_2.

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Benton, M. J. y P. S. Spencer. "British Permian fossil reptile sites". En Fossil Reptiles of Great Britain, 17–32. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_3.

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Benton, M. J. y P. S. Spencer. "British Triassic fossil reptile sites". En Fossil Reptiles of Great Britain, 33–95. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_4.

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Benton, M. J. y P. S. Spencer. "British Cretaceous fossil reptile sites". En Fossil Reptiles of Great Britain, 215–70. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_8.

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Benton, M. J. y P. S. Spencer. "British Caenozoic fossil reptile sites". En Fossil Reptiles of Great Britain, 271–99. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_9.

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Benton, M. J. y P. S. Spencer. "Introduction". En Fossil Reptiles of Great Britain, 1–12. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_1.

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Benton, M. J. y P. S. Spencer. "British Early Jurassic fossil reptile sites". En Fossil Reptiles of Great Britain, 97–121. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_5.

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Benton, M. J. y P. S. Spencer. "British Mid Jurassic fossil reptile sites". En Fossil Reptiles of Great Britain, 123–64. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_6.

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Benton, M. J. y P. S. Spencer. "British Late Jurassic fossil reptile sites". En Fossil Reptiles of Great Britain, 165–214. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0519-4_7.

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Allin, Edgar F. y James A. Hopson. "Evolution of the Auditory System in Synapsida (“Mammal-Like Reptiles” and Primitive Mammals) as Seen in the Fossil Record". En The Evolutionary Biology of Hearing, 587–614. New York, NY: Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4612-2784-7_37.

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Actas de conferencias sobre el tema "Reptiles, Fossil"

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Hastings, Alexander, John Westgaard y H. Douglas Hanks. "MARINE REPTILE FOSSILS FROM THE LATE CRETACEOUS (CENOMANIAN) COLERAINE FORMATION OF NORTHERN MINNESOTA (USA)". En 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-348177.

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Gibson, Michael, Tom Byl y Champagne Cunningham. "PRELIMINARY RESULTS OF MICROCYSTIN (MT) AND SAXITOXIN (SXT) PRESERVATION IN FOSSIL MOLLUSKS OF THE LATE CRETACEOUS COON CREEK FORMATION LAGERSTÄTTE: IMPLICATIONS FOR A KILL MECHANISM PRODUCING POSSIBLE MARINE REPTILE DEADFALLS". En Joint 56th Annual North-Central/ 71st Annual Southeastern Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022nc-376113.

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Kwiatkowski, Chad, Katarina A. Keating, Robyn L. Henderek, Yusuf A. Romaine-Elkhadri, Emma L. Harries, Mark D. Szydlo, Jonathan G. Hardes et al. "A TREASURE TROVE OF TRIASSIC TRACKS: REPTILE FOOTPRINT FOSSILS IN THE MOENKOPI FORMATION REVEALED BY TWO SCIENTISTS IN PARKS SURVEYS AT WUPATKI NATIONAL MONUMENT, NORTH-CENTRAL ARIZONA". En GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-381801.

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Informes sobre el tema "Reptiles, Fossil"

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Salcido, Charles, Patrick Wilson, Justin Tweet, Blake McCan, Clint Boyd y Vincent Santucci. Theodore Roosevelt National Park: Paleontological resource inventory (public version). National Park Service, mayo de 2022. http://dx.doi.org/10.36967/nrr-2293509.

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Theodore Roosevelt National Park (THRO) in western North Dakota was established for its historical connections with President Theodore Roosevelt. It contains not only historical and cultural resources, but abundant natural resources as well. Among these is one of the best geological and paleontological records of the Paleocene Epoch (66 to 56 million years ago) of any park in the National Park System. The Paleocene Epoch is of great scientific interest due to the great mass extinction that occurred at its opening (the Cretaceous–Paleogene extinction event), and the unusual climatic event that began at the end of the epoch (the Paleocene–Eocene Thermal Maximum, an anomalous global temperature spike). It is during the Paleocene that mammals began to diversify and move into the large-bodied niches vacated by dinosaurs. The rocks exposed at THRO preserve the latter part of the Paleocene, when mammals were proliferating and crocodiles were the largest predators. Western North Dakota was warmer and wetter with swampy forests; today these are preserved as the “petrified forests” that are one of THRO’s notable features. Despite abundant fossil resources, THRO has not historically been a scene of significant paleontological exploration. For example, the fossil forests have only had one published scientific description, and that report focused on the associated paleosols (“fossil soils”). The widespread petrified wood of the area has been known since at least the 19th century and was considered significant enough to be a tourist draw in the decades leading up to the establishment of THRO in 1947. Paleontologists occasionally collected and described fossil specimens from the park over the next few decades, but the true extent of paleontological resources was not realized until a joint North Dakota Geological Survey–NPS investigation under John Hoganson and Johnathan Campbell between 1994–1996. This survey uncovered 400 paleontological localities within the park representing a variety of plant, invertebrate, vertebrate, and trace fossils. Limited investigation and occasional collection of noteworthy specimens took place over the next two decades. In 2020, a new two-year initiative to further document the park’s paleontological resources began. This inventory, which was the basis for this report, identified another 158 fossil localities, some yielding taxa not recorded by the previous survey. Additional specimens were collected from the surface, among them a partial skeleton of a choristodere (an extinct aquatic reptile), dental material of two mammal taxa not previously recorded at THRO, and the first bird track found at the park. The inventory also provided an assessment of an area scheduled for ground-disturbing maintenance. This inventory is intended to inform future paleontological resource research, management, protection, and interpretation at THRO. THRO’s bedrock geology is dominated by two Paleocene rock formations: the Bullion Creek Formation and the overlying Sentinel Butte Formation of the Fort Union Group. Weathering of these formations has produced the distinctive banded badlands seen in THRO today. These two formations were deposited under very different conditions than the current conditions of western North Dakota. In the Paleocene, the region was warm and wet, with a landscape dominated by swamps, lakes, and rivers. Great forests now represented by petrified wood grew throughout the area. Freshwater mollusks, fish, amphibians (including giant salamanders), turtles, choristoderes, and crocodilians abounded in the ancient wetlands, while a variety of mammals representing either extinct lineages or the early forebearers of modern groups inhabited the land. There is little representation of the next 56 million years at THRO. The only evidence we have of events in the park for most of these millions of years is isolated Neogene lag deposits and terrace gravel. Quaternary surficial deposits have yielded a few fossils...
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