Relevant bibliographies by topics / Eusthenopteron

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Eusthenopteron'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Eusthenopteron"

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Sanchez, S., P. Tafforeau, and P. E. Ahlberg. "The humerus of Eusthenopteron : a puzzling organization presaging the establishment of tetrapod limb bone marrow." Proceedings of the Royal Society B: Biological Sciences 281, no. 1782 (May 7, 2014): 20140299. http://dx.doi.org/10.1098/rspb.2014.0299.

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Because of its close relationship to tetrapods, Eusthenopteron is an important taxon for understanding the establishment of the tetrapod body plan. Notably, it is one of the earliest sarcopterygians in which the humerus of the pectoral fin skeleton is preserved. The microanatomical and histological organization of this humerus provides important data for understanding the evolutionary steps that built up the distinctive architecture of tetrapod limb bones. Previous histological studies showed that Eusthenopteron 's long-bone organization was established through typical tetrapod ossification modalities. Based on a three-dimensional reconstruction of the inner microstructure of Eusthenopteron 's humerus, obtained from propagation phase-contrast X-ray synchrotron microtomography, we are now able to show that, despite ossification mechanisms and growth patterns similar to those of tetrapods, it also retains plesiomorphic characters such as a large medullary cavity, partly resulting from the perichondral ossification around a large cartilaginous bud as in actinopterygians. It also exhibits a distinctive tubular organization of bone-marrow processes. The connection between these processes and epiphyseal structures highlights their close functional relationship, suggesting that either bone marrow played a crucial role in the long-bone elongation processes or that trabecular bone resulting from the erosion of hypertrophied cartilage created a microenvironment for haematopoietic stem cell niches.
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Downs,, Jason P., Edward B. Daeschler,, Alison M. Long, and Neil H. Shubin. "Eusthenopteron jenkinsi sp. nov. (Sarcopterygii, Tristichopteridae) from the Upper Devonian of Nunavut, Canada, and a Review of Eusthenopteron Taxonomy." Breviora 562, no. 1 (June 2018): 1–24. http://dx.doi.org/10.3099/mcz44.1.

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3

Stewart, Thomas A., Justin B. Lemberg, Natalia K. Taft, Ihna Yoo, Edward B. Daeschler, and Neil H. Shubin. "Fin ray patterns at the fin-to-limb transition." Proceedings of the National Academy of Sciences 117, no. 3 (December 30, 2019): 1612–20. http://dx.doi.org/10.1073/pnas.1915983117.

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The fin-to-limb transition was marked by the origin of digits and the loss of dermal fin rays. Paleontological research into this transformation has focused on the evolution of the endoskeleton, with little attention paid to fin ray structure and function. To address this knowledge gap, we study the dermal rays of the pectoral fins of 3 key tetrapodomorph taxa—Sauripterus taylori (Rhizodontida), Eusthenopteron foordi (Tristichopteridae), and Tiktaalik roseae (Elpistostegalia)—using computed tomography. These data show several trends in the lineage leading to digited forms, including the consolidation of fin rays (e.g., reduced segmentation and branching), reduction of the fin web, and unexpectedly, the evolution of asymmetry between dorsal and ventral hemitrichia. In Eusthenopteron, dorsal rays cover the preaxial endoskeleton slightly more than ventral rays. In Tiktaalik, dorsal rays fully cover the third and fourth mesomeres, while ventral rays are restricted distal to these elements, suggesting the presence of ventralized musculature at the fin tip analogous to a fleshy “palm.” Asymmetry is also observed in cross-sectional areas of dorsal and ventral rays. Eusthenopteron dorsal rays are slightly larger than ventral rays; by contrast, Tiktaalik dorsal rays can be several times larger than ventral rays, and degree of asymmetry appears to be greater at larger sizes. Analysis of extant osteichthyans suggests that cross-sectional asymmetry in the dermal rays of paired fins is plesiomorphic to crown group osteichthyans. The evolution of dermal rays in crownward stem tetrapods reflects adaptation for a fin-supported elevated posture and resistance to substrate-based loading prior to the origin of digits.
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Roček, Z. "Palatoquadrate in a Devonian fish Eusthenopteron Evidence of its dual origin." Journal of Zoological Systematics and Evolutionary Research 31, no. 1 (April 27, 2009): 38–46. http://dx.doi.org/10.1111/j.1439-0469.1993.tb00177.x.

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Mishima, Hiroyuki, Mitsuo Kakei, Ichiro Sasagawa, and Yasuo Miake. "Nature of Apatite Crystals in the Tooth of Eusthenopteron from Devonian." Journal of Hard Tissue Biology 26, no. 4 (2017): 399–404. http://dx.doi.org/10.2485/jhtb.26.399.

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Mishima, H., M. Kakei, and Y. Miake. "Histological and analytics studies of dermal exoskeleton and tooth of Eusthenopteron from Devonian." Bone 48 (May 2011): S111. http://dx.doi.org/10.1016/j.bone.2011.03.186.

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7

Zupiņš, Ivars. "A New Tristichopterid (Pisces, Sarcopterygii) from the Devonian of Latvia." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 62, no. 1-2 (January 1, 2008): 40–46. http://dx.doi.org/10.2478/v10046-008-0007-0.

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A New Tristichopterid (Pisces, Sarcopterygii) from the Devonian of Latvia A new species of tristichopterid sarcopterygians, Eusthenopteron kurshi, sp. nov., the earliest representative of the family reported to this date from the territory known as the Main Devonian Field, is described from the well-known fossil locality of Latvia, the Lode clay quarry (Upper Givetian/Lower Frasnian). One complete skeleton and several disarticulated bone elements of the head and shoulder girdle have been found. The material reveals some morphologic features like a relatively short parietal shield in the cranial roof and rather asymmetric caudal fin. Characteristic features for the species are a front end of the squamosal extending comparatively far anteriorly and opercular being twice as high as the subopercular.
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LAURIN, MICHEL, FRANÇOIS J. MEUNIER, DAMIEN GERMAIN, and MICHEL LEMOINE. "A MICROANATOMICAL AND HISTOLOGICAL STUDY OF THE PAIRED FIN SKELETON OF THE DEVONIAN SARCOPTERYGIAN EUSTHENOPTERON FOORDI." Journal of Paleontology 81, no. 1 (January 2007): 143–53. http://dx.doi.org/10.1666/0022-3360(2007)81[143:amahso]2.0.co;2.

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Meunier, François J., and Michel Laurin. "A microanatomical and histological study of the fin long bones of the Devonian sarcopterygian Eusthenopteron foordi." Acta Zoologica 93, no. 1 (November 24, 2010): 88–97. http://dx.doi.org/10.1111/j.1463-6395.2010.00489.x.

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Mishima, H., M. Kakei, and Y. Miake. "Structure and chemical composition of apatite crystal in dermal exoskeleton and tooth of eusthenopteron from Devonian." Bone 44 (June 2009): S258—S259. http://dx.doi.org/10.1016/j.bone.2009.03.442.

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Dissertations / Theses on the topic "Eusthenopteron"

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Leblanc, Joël. "Précisions sur l'anatomie de l'ostéolépiforme Eusthenopteron Foordi du dévonien supérieur de Miguasha, Québec." Thèse, [Rimouski, Québec] : Université du Québec à Rimouski, 2005.

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Thèse (M. Sc.) - Université du Québec à Rimouski, 2005.
Titre de lʹécran-titre (visionné le 1er septembre 2006). Mémoire présenté à l'Université du Québec à Rimouski comme exigence partielle du programme de maîtrise en gestion de la faune et de ses habitats. CaQRU CaQRU Bibliogr.: f. 63-67. Paraît aussi en éd. imprimée. CaQRU
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2

Hitchcock, Edward C. (Edward Curtice). "The anterior-most vertebrae and occiput of Eusthenopteron : implications in the origin of the tetrapod atlas-axis complex." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61224.

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The anterior-most elements of the vertebral column of Eusthenopteron foordi are examined by direct observation of articulated material. Large blade-like supraneural spines are present above neural arches 1, 3, and 5, but not 2 or 4. The supraneural spines support a muscular complex involved in feeding, not only through raising the snout, but also in depressing the lower jaws by the forward swing of the quadrate. The similarity in skulls of osteolepiforms, and between osteolepiforms and Paleozoic tetrapods implies that a cranio-vertebral joint of similar function existed in the ancestor of tetrapods, forming the precursor of the tetrapod atlas-axis complex.
The distinct nature of the basioccipital and exocippitals of tetrapods is the result of reduced ossification of the occiput, and no the incorporation of vertebral elements onto the back of the braincase relative to the rhipidistian condition. The similarity between the occiput and succeeding vertebrae of some primitive tetrapods is due to analogous ossification of notochordal tissue. Bony occipital condyles arose separately in many lineages of Paleozoic tetrapods. The atlas-axis complex of tetrapods is constrained by the pattern of occipital articulation. It is an excellent character for diagnosis of particular groups, but a poor character for determining relationships between separate lineages.
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