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Dissertations / Theses on the topic 'Brachiopoden'

Author: Grafiati
Published: 10 July 2021
Last updated: 29 July 2025

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1

Piazza, Veronica. "Response of early Toarcian (Early Jurassic) benthic marine faunas from South-Western Europe to temperature-related stressors." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22950.

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Globaler Temperaturanstieg, Ozeanversauerung und Sauerstoffmangel (temperaturbedingte Stressoren), spielen eine wichtige Rolle während Klimawandel. Die kombinierten Auswirkungen wirken sich negativ auf marine Lebensgemeinschaften und Ökosystemen aus und verschärfen die Effekte anderer Stressoren. Es gibt für den aktuellen und vergangenen Erwärmungsphasen Belege für veränderte Artenverteilung, Lebensraumverlust, Artensterben und verminderte physiologische Leistungen von Organismen. Die spezifischen Mechanismen werden diskutiert. Umweltveränderungen in der Erdvergangenheit bieten die Gelegenheit
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2

Griškonytė, Ieva. "Minijos regioninio aukšto geocheminiai uolienų ir brachiopodų tyrimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20090908_194022-85278.

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MINIJOS REGIONINIO AUKŠTO GEOCHEMINIAI UOLIENŲ IR BRACHIOPODŲ TYRIMAI SANTRAUKA Vadinamos “karbonatinės sistemos” uždarumas/atvirumas turi didelę reikšmę nustatant sedimentacinio baseino aplinkos sąlygas. . Tik tuo atveju, kai sistemos yra uždaros ( arba uždaros pagrindinių elementų atžvilgiu) atitinkamos diagenezės nustatymui (ištirpinimas, cementacija), gali būti padarytas poveikis poringumui ir skvarbumui. Kai uolienų sistemos yra uždaros, ištirpinimas vyksta dėl pirminės nestabilios ar metastabilios mineraloginės grūdelių sudėties (aragonito, kalcito su padidintu Mg kiekiu) arba dėl grūdel
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3

Saulnier, Ségolène. "Exploration des compositions isotopiques en magnésium des carbonates marins comme traceurs paléoenvironnementaux." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0267/document.

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L'utilisation des compositions isotopiques en Mg des carbonates marins peut permettre l'étude du cycle biogéochimique de cet élément. Ainsi, les carbonates sont susceptibles d'enregistrer la composition isotopique de Mg de l'océan lors de leur précipitation. Cependant, il est nécessaire de comprendre les facteurs environnementaux (e.g. température, pH, Mg/Ca de la solution) qui peuvent contrôler ces compositions. Le premier objectif de cette thèse a donc été de déterminer les paramètres pouvant impacter les compositions isotopiques de Mg des carbonates par des précipitations expérimentales en
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4

Walls, Bradley J. "Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic Reconstruction." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1243010764.

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5

Joubin, Louis. "Recherches sur l'anatomie des brachiopodes inarticulés." Paris : Bibliothèque universitaire Pierre et Marie Curie (BUPMC), 2009. http://jubil.upmc.fr/sdx/pl/toc.xsp?id=TH_000327_001&fmt=upmc&idtoc=TH_000327_001-pleadetoc&base=fa.

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6

Craig, Robert S. "Western Australian Late Cretaceous and Cenozoic brachiopoda." Thesis, Curtin University, 1999. http://hdl.handle.net/20.500.11937/2320.

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The research reported in this thesis focuses on Late Cretaceous and Cenozoic fossil brachiopods of Western Australia. Although the work is primarily taxonomic, it also includes biodiversity, distribution and some aspects of ecology of the brachiopods described.The most recent information on the anatomy, physiology and ecology of brachiopods is summarised at the beginning of the thesis.Identification of brachiopods is determined primarily on internal morphological features as brachiopods tend to be homomorphic, many species looking externally the same. The morphological features used in the ide
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7

Botquelen, Arnaud Gourvennec Rémy Loi Alfredo. "Impact des variations eustatiques sur les assemblages benthiques à brachiopodes l'Ordovicien sarde et le Dévonien Ibéro-armoricain. Paléoécologie, Taphonomie, Statigraphie séquentielle, Systématique /." [S.l.] : [s.n.], 2003. http://tel.ccsd.cnrs.fr/docs/00/04/74/68/PDF/tel-00007779.pdf.

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8

Craig, Robert S. "Western Australian Late Cretaceous and Cenozoic brachiopoda." Curtin University of Technology, School of Applied Geology, 1999. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12043.

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The research reported in this thesis focuses on Late Cretaceous and Cenozoic fossil brachiopods of Western Australia. Although the work is primarily taxonomic, it also includes biodiversity, distribution and some aspects of ecology of the brachiopods described.The most recent information on the anatomy, physiology and ecology of brachiopods is summarised at the beginning of the thesis.Identification of brachiopods is determined primarily on internal morphological features as brachiopods tend to be homomorphic, many species looking externally the same. The morphological features used in the ide
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9

Botquelen, Arnaud. "Impact des variations eustatiques sur les assemblages benthiques à brachiopodes : l'Ordovicien sarde et le Dévonien Ibéro-armoricain. Paléoécologie, Taphonomie, Statigraphie séquentielle, Systématique." Brest, 2003. https://tel.archives-ouvertes.fr/tel-00007123.

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Ce travail de thèse avait un double objectif: préciser les relations entre les organismes marins paléozoïques et les changements paléoenvironnementaux et si possible établir un modèle applicable dans différents domaines paléogéographiques et à différentes époques du Paléozoïque. Dans ce but, des analyses sédimentologiques, paléoécologiques et taphonomiques ont été réalisées afin de déterminer la réponse de la faune benthique aux variations du niveau marin, dans un contexte environnemental de plate-forme, à 2 époques différentes, l'Ordovicien supérieur et le Dévonien inférieur. Une coupe du Car
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10

Harper, D. A. T. "Diversification of the Ordovician brachiopod fauna." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426983.

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11

Bornsäter, Mellbin Barbro. "Linguliform Brachiopods from the terminal Cambrain to lower Ordovician Tiñu section, Mexico." Thesis, Uppsala universitet, Paleobiologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88918.

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Tiñuformationen i Oaxaca, Mexiko är den enda fossilförande enheten från undre paleozoikum mellan den Laurentiska plattformen i nordvästra Mexiko och de Gondwanska lagerföljderna i Sydamerika. Det har nyligen visats att Tiñusektionen är en koncentrerad passiv kantlagerföljd med Gondwanakaraktär. Formationen delas upp i två delar; Yudachica från översta kambrium, som vilar okonformt på mellanproterozoisk grund, och Río Salinas från undre ordovicium (tremadoc). Formationen har tidigare studerats med avseende på dess avsättningsmiljöer och det fossila innehållet av trilobiter och konodonter vilka
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12

Clegg, Heather. "Biomolecules in recent and fossil articulated brachiopods." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334162.

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13

Evangelisti, Francesca <1978&gt. "Mediterranean brachiopods: morphological, ecological and phylogenetic aspects." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2738/1/Evangelisti_Francesca_Tesi.pdf.

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The Brachiopoda of the Marine Protected Area “Secche di Tor Paterno”, Central Tyrrhenian Sea, have been investigated in order to give a first glance of the diversity of the brachiopods of this area and provide a new report on the Mediterranean Brachiopod fauna. Four species were reported: Novocrania anomala (Müller, 1776), Megathiris detruncata (Gmelin, 1790), Joania cordata (Risso,1826) and Argyrotheca cuneata (Risso,1826). For all the four species a morphological analysis was carried out. For the two most abundant species, J.cordata and A. cuneata, a morphometric study, based on thickness/wi
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14

Evangelisti, Francesca <1978&gt. "Mediterranean brachiopods: morphological, ecological and phylogenetic aspects." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2738/.

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The Brachiopoda of the Marine Protected Area “Secche di Tor Paterno”, Central Tyrrhenian Sea, have been investigated in order to give a first glance of the diversity of the brachiopods of this area and provide a new report on the Mediterranean Brachiopod fauna. Four species were reported: Novocrania anomala (Müller, 1776), Megathiris detruncata (Gmelin, 1790), Joania cordata (Risso,1826) and Argyrotheca cuneata (Risso,1826). For all the four species a morphological analysis was carried out. For the two most abundant species, J.cordata and A. cuneata, a morphometric study, based on thickness/wi
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15

Swisher, Robert E. "Paleobiogeographical and evolutionary analysis of Late Ordovician, C₅ sequence brachiopod species, with special reference to Rhynchonellid taxa." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1245445583.

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16

Kharroubi, Benali. "Les brachiopodes liasiques de l'Algérie occidentale : étude biostratigraphique, paléoécologique et paléontologique." Lyon 1, 1987. http://www.theses.fr/1987LYO10098.

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Des coupes fournissant de nombreux brachiopodes ont ete levees dans le lias d'algerie occidentale, monts de saida-takhmaret, de ghar-roubane et du djebel nador. On presente l'etude paleontologique des principales especes de rhynchonellides et de terebratulides ainsi qu'une biostratigraphie du carixien moyen au toarcien moyen. La comparaison avec les faunes provencales, pyreneenne et espagnole montre les differences importantes au carixien. L'homogeneisation ne debute qu'au domerien moyen et elle s'accentue au toarcien. Cette evolution suit les etapes de la dislocation d'une plateforme carbonat
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17

Kharroubi, Benali. "Les Brachiopodes liasiques de l'Algérie occidentale étude biostratigraphique, paléoécologique et paléontologique /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37606562r.

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18

Long, Sarah Louise. "Aspects of cementation in recent and fossil Brachiopoda." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246325.

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19

Garcia, Jean-Pierre. "Les variations du niveau marin sur le bassin de Paris au bathonien-callovien : impacts sur les communautés benthiques et sur l'évolution des ornithellidés (Terebratellinida) /." Dijon : Centre des sciences de la Terre, 1993. http://catalogue.bnf.fr/ark:/12148/cb35687818q.

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20

Meidlinger, Karen. "Reproductive ecology of the Antarctic brachiopod Liothyrella uva." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242863.

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21

YE, FACHENG. "THE MICROSTRUCTURE OF MODERN AND FOSSIL BRACHIOPOD ARCHIVES." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/625022.

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Due to their high biodiversity and widespread distribution in the Phanerozoic oceans, brachiopods are very important tools for research in palaeontology and related fields in Earth Sciences to investigate the past and present global change. Their biominerals have been considered the best carbonate archives of proxies for extending climate and environmental records on a broad geographical scale over long periods of time. Their fidelity as archives is supported by the following: 1) they record the physical and chemical composition of the seawater in which they live without, or with very limited,
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22

Gourvennec, Rémy. "Brachiopodes spiriferida du dévonien inferieur du massif armoricain : systématique, paléobiologie, évolution, biostratigraphie." Brest, 1987. http://www.theses.fr/1987BRES2033.

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Cet ouvrage est consacré aux spiriferides du dévonien inferieur du massif armoricain. L’étude systématique comprend la description de 51 espèces dont 17 nouvelles et 6 laissées en nomenclature ouverte; elle est complétée par une étude biométrique. Le chapitre consacre à la biologie traite de la morphologie fonctionnelle, de la croissance de la coquille, de paléoécologie et de l'étude des microsculptures et de leurs implications. On montre la prédominance des modalités évolutives de type anagénétique. L’étude de plusieurs coupes de référence permet d'établir la succession des espèces et de prop
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Gourvennec, Rémy. "Brachiopodes Spiriferida du Dévonien inférieur du Massif armoricain : systématique, paléobiologie, évolution, biostratigraphie /." Brest : Université de Bretagne occidentale, 1989. http://catalogue.bnf.fr/ark:/12148/cb35006361j.

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24

Gourvennec, Rémy. "Brachiopodes spiriferida du Devonien inférieur du Massif armoricain systématique, paléobiologie, évolution, biostratigraphie /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605553j.

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25

Stern, Benjamin. "Biomineral lipids in living and fossil molluscs." Thesis, University of Newcastle Upon Tyne, 1996. http://hdl.handle.net/10443/1713.

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It has been proposed that geochemical and biomolecular palaeontological information can be obtained from biomineral associatedli pids. The location of lipidic material within the inorganic structureo f molluscan shells has previously been unknown, with important implications for long term survival of lipids and post-depositional contamination from the environment. Discrete experimental stages have been investigated and the different mechanical and chemical methods combined for the removal of contaminating material prior to the release and analysis of surficial, intercrystalline and intracrysta
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Azmy, Karem. "Isotopic composition of Silurian brachiopods, implications for coeval seawater." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20988.pdf.

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27

Raouiati, Hassan. "Les brachiopodes du lias-dogger inférieur des Béni Snassen orientaux (Maroc nord-oriental)." Lyon 1, 1998. http://www.theses.fr/1998LYO10126.

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Brown, Karen E. "Bimineralisation of the calcitic-shelled, inarticulated brachiopod, Neocrania anomala." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244444.

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29

Minkler, Heidi. "The brachiopod communities and systematic paleontology of Anticosti Island /." Columbus, Ohio : Ohio State University, 2003. http://hdl.handle.net/1811/6105.

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Welch, Delpfine Ellen. "Geographical variation and evolution in the Middle Devonian brachiopod, Mucrospirifer." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134118/.

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31

Hoel, Ole Andreas. "Diversity and Life Habits of Silurian Strophomenide Brachiopods of Gotland." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4728.

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<p>The Superfamily Strophomenoidea is a very diverse group of brachiopods in the Early Palaeozoic. In the Silurian succession on Gotland, they are among the most easily identifiable, and commonly found fossils. However, there are few detailed studies of this group from Gotland, and no new strophomenide taxa have been described from this area since 1869. The life habits of strophomenides are also poorly understood, partly because their morphology differs greatly from that of living brachiopods. </p><p>The succession on Gotland yielded 27 species belonging to the Strophomenoidea, of which two sp
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32

Bose, Rituparna. "EPIBIONTS ON BRACHIOPODS FROM THE DEVONIAN DUNDEE FORMATION OF OHIO." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1155059386.

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33

Trubovitz, Sarah. "Reconstructing the Great Ordovician Biodiversification Event through brachiopods of Oklahoma." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1461943954.

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34

Winrow, Paul. "A review of Cambrian lingulate brachiopods of England and Wales." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/29417.

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The taxonomy of Cambrian lingulate (phosphatic shelled) brachiopods from England and Wales are reviewed in detail for the first time in nearly a century. 37 linguliformean brachiopod species, assigned to 23 genera, are described; 19 taxa are recorded in open taxonomy. Giving provisional names, three new genera, Svenjaella, Alexellus and Kayleigha are erected and nine new species are described (Chapter 4). Detailed cladistic analysis supports previous reports that Acrotretidae is a paraphyletic grouping of brachiopods which gave rise to other families within the Acrotretoidea (Chapter 6). Curti
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Verna, V. "GUADALUPIAN BRACHIOPODS FROM TUNISIA AND TURKEY: SYSTEMATICS AND PALAEOBIOGEOGRAPHIC IMPLICATIONS." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/152907.

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In the present PhD Thesis two Guadalupian brachiopod faunas are described respectively from succession cropping out at Djebel Tebaga de Medenine, S Tunisia, and from the Guadalupian lower-middle part of the Pamuçak Formation at Çürük Dağ, Antalya (Turkey). The study is based on collection already available in Dipartimento di Scienze della Terra “A. Desio”, Milano and on material newly collected by the writer. The taxonomic study and description of the brachiopod collections, based on the observations of the macro- and micro- external and internal morphological features, with critical com
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Pérez-Huerta, Alberto. "Brachiopods and paleoecological studies in the Pennsylvanian of the Great Basin (U.S.A.) /." view abstract or download file of text, 2004. http://wwwlib.umi.com/cr/uoregon/fullcit?p3136420.

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Thesis (Ph. D.)--University of Oregon, 2004.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 394-419). Also available for download via the World Wide Web; free to University of Oregon users.
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Halamski, Adam Tadeusz. "Analiza faunistyczna ramienionogów środkowodewońskich północnej cześci Gór Świetokrzyskich." Lyon 1, 2004. http://www.theses.fr/2004LYO10086.

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La thèse est une révision des Brachiopodes du Dévonien moyen de la région septentrionale (Lysogóry) des Monts Sainte-Croix et leur analyse paléobiogéographique. On donne une présentation du Mésodévonien de la région étudiée selon les normes du projet international Devon-Korrelationstabelle. Dans la partie systématique l'on décrit 119 espèces, dont six nouvelles. 34 espèces semblent endémiques. 32 sont communes avec l'Eifel, 10 avec la Moravie, 9 avec le Massif schisteux rhénan, 7 avec l'Espagne et la Birmanie. L'analyse de la distribution de 237 genres des Brachiopodes mésodévoniens à l'intéri
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Rodland, David Laurence. "Spatial variability in modern brachiopod assemblages: paleoecological and geochemical implications." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/27858.

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An accurate understanding of global patterns through geologic time depends upon multi-scale analyses of spatial variation within narrow temporal intervals. This work investigates geochemical and paleoecological patterns in modern brachiopod faunas which may serve as analogues for ancient brachiopod assemblages. The paleoclimatic utility of delta18O in the phosphatic phase of lingulid brachiopod shells requires valve secretion in equilibrium with seawater, an assumption tested (and rejected) when analyzed at scales ranging from millimeters to kilometers. By contrast, biological encrustation of
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Fauré, Philippe. "Le lias des Pyrénées." Toulouse 3, 2002. http://www.theses.fr/2002TOU30072.

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40

Legrand-Blain, Marie. "Dynamique des Brachiopodes carbonifères sur la plate-forme carbonatée du Sahara algérien : paléoenvironnements, paléobiogéographie, évolution." Bordeaux 1, 1985. http://www.theses.fr/1985BOR10572.

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Les brachiopodes étudiés proviennent du dernier grand cycle du carbonifère marin, sur l'ensemble du Sahara algérien : Viséen supérieur à Moscovien. Leur analyse comporte 5 parties : systématique, biostratigraphie, paléobiogéographie, paléoécologie, évolution. . .
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Aït-Ouméziane, Habiba. "Modalités évolutives et systématiques des genres Rhynchonelloidella Ivanoviella et Thurmanella (Brachiopodes Rhynchonellides) au Callovien et à l'Oxfordien." Dijon, 1987. http://www.theses.fr/1987DIJOS002.

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42

Egerquist, Eva. "Ordovician (Billingen and Volkhov stages) Brachiopod Faunas of the East Baltic." Doctoral thesis, Uppsala University, Palaeontology group, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4303.

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<p>Lower-Middle Ordovician (Arenig) successions in the East Baltic have been investigated for more than one hundred and fifty years. Nevertheless detailed sampling still yields new species and better knowledge of the environment in which these organisms lived. The successions are well suited for bed by bed sampling because of the lack of tectonic disturbance and because the sequences are well documented. </p><p>This study analyses collections of Billingen-Volkhov age mainly from the St. Petersburg region, but also from Estonia. A great deal of the material was obtained from the marly to clayey
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43

Saxén, Sara. "Linguliform Brachiopods from the Middle Cambrian ‘Thick’ Stephen Formation at Odaray Mountain, Canadian Rocky Mountains." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256188.

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The linguliform brachiopod fauna from the Stephen Formation have long been thought to be very species poor and only consist of a few genera, but new discoveries from lime-stone beds in the “thick” Stephen Formation shows that this is not the case. The species described herein, Kyrshabaktella cf. tatjanae and Ceratreta hansi sp. nov., are two new additions to described species and genera of the area.The specimens come from a 0.6 meters thick limestone bed, approximately 17 meter above the base of the formation in the Canadian Rocky Mountains, British Columbia, Yoho National Park a few kilometer
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Fryer, S. "Systematics and evolution of the brachiopods Pachymagas and Waiparia in New Zealand." Thesis, University of Canterbury. Geology, 1999. http://hdl.handle.net/10092/6784.

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New Zealand brachiopod species previously referred to Pachymagas and the associated genus Waiparia are systematically revised, the profusion of questionably substantiated species names and the inappropriate and untenable generic equivalence given (hence "Pachymagas" of the title) with younger, morphologically dissimilar South American species providing the rationale and impetus for the revision. Through excavation to expose cardinal characters it was found that a relatively consistent morphology was retained throughout the "Pachymagas"-Waiparia lineage, the progressive thickening of the poste
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45

McClean, Anne Elizabeth. "The chitinophosphatic brachiopods of the Upper Ordovician Chair of Kildare limestone, Ireland." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239004.

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46

Mello, Luiz Henrique Cruz de. "Análise cladística dos Bouchardiinae Allan, 1940 (Brachiopoda, Terebratellidae): implicações sistemáticas e paleozoogeográficas." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/44/44136/tde-13112015-164901/.

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Foi realizada a investigação cladística dos Bouchardiinae (Brachiopoda, Terebratellidae), braquiópodes comuns no registro fóssil cenozóico da Argentina, Uruguai, Antártica, Nova Zelândia e Austrália, bem como, atualmente, na plataforma brasileira. A história geológica do grupo remete ao limite Cretáceo/Terciário. O estudo teve como objetivo central demonstrar que a análise das feições morfológicas internas e externas de conchas fósseis e atuais de braquiópodes possibilita a realização de estudos cladísticos. Para atingir esse objetivo foram avaliadas as relações de parentesco e a sistemática d
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47

Layng, Alexander Patrick. "Two-dimensional landmark analysis of Spinocyrtid brachiopods of Euramerica during the Givetian." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5799.

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Recent inquiry into the nomenclature of several species within Spinocyrtia has led to questions concerning name applicability and validity, particularly whether Delthyris granulosa and Spinocyrtia (Spirifer) granulosa are synonymous. This study utilized two-dimensional outline landmark analysis, a form of geometric morphometric analysis, to evaluate interspecific variation among these species. I took over a thousand photographs of over a hundred specimens of brachiopods belonging to the family Spinocyrtiidae. Ninety-six specimens originated from the Givetian outcrop belt of New York state, thr
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48

Serobyan, Vahram. "Upper Devonian brachiopods and sedimentary sequences from Armenia : biodiversity, stratigraphy and paleobiogeography." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR033.

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Les séries sédimentaires carbonatées-terrigènes et les brachiopodes du Dévonien supérieur d’Arménie centrale ont été ici étudiées à partir de trois coupes distinctes (Ertych, Djravank et Noravank). Leur interprétation paléoenvironnementale a été réalisée à partir des bio- et lithofaciès afin de reconstituer leur milieux de dépôt. De plus, les coupes étudiées ont été corrélées lithostratigraphiquement, ainsi que biostratigraphiquement, en se basant sur leurs assemblages à brachiopodes. Vingt-six espèces de brachiopodes sont décrites sur la base d’un matériel récemment collecté. Quatre nouveaux
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49

Tort, Anthony. "Caractérisation quantitative de la morphologie externe et interne de Terebratulida (brachiopodes) actuels et jurassiques : implications systématiques." Dijon, 2000. http://www.theses.fr/2000DIJOS040.

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Chez les brachiopodes actuels et fossiles, l'approche typologique a conduit à multiplier les créations d'espèces et de genres sans tenir compte de la variabilité morphologique. Par ailleurs, les structures internes des brachiopodes ont toujours été considérées comme stables et ont servi de seule base à la définition d'un grand nombre de genres. Cette thèse a pour objectif de tester des descripteurs morphologiques quantitatifs suffisamment performants pour décrire la variabilité morphologique des coquilles chez les Terebratulida et d'évaluer la stabilité des structures internes à l'aide de méth
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50

Alexander, Mannelqvist. "Paleontology and Sedimentology of the Alum Shale Formation at Björnberget, Västerbotten County, Sweden." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296696.

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A new locality of the Alum Shale Formation at Björnberget, Västerbotten County, of the lower allochthon of the Caledonian front is described herein. Two new species of acrotretid brachiopods were found. Tingitanella vilhelminia n. sp. adds another species to the monospecific genus. T. vilhelminia also extend the genus distribution to Sweden. Anabolotreta furcatus n. sp. is the first member of the genus found in Sweden and extend the stratigraphic range to Stage 5 of Cambrian Series 3. It also exhibits an unusual bifurcating shell structure described for the first time herein. One trilobite was
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