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<title lang=en>Re-description of a putative Early Cretaceous "teleosaurid" from France, with implications for the survival of metriorhynchids and teleosaurids across the Jurassic-Cretaceous Boundary</title>
<creator>Young, Mark t.</creator>
<creator>Brandalise de andrade, Marco</creator>
<creator>Cornee, Jean-Jacques</creator>
<creator>Steel, Lorna</creator>
<creator>Foffa, Davide</creator>
<contributor>University of Edinburgh</contributor>
<contributor>Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bassins ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Natural History Museum, London</contributor>
<contributor>University of Bristol [Bristol]</contributor>
<source>ISSN: 0753-3969</source>
<source>Annales de Paléontologie</source>
<publisher>Elsevier</publisher>
<publisher>Elsevier Masson</publisher>
<identifier>hal-01122803</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01122803</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01122803</source>
<source>Annales de Paléontologie, Elsevier Masson, 2014, 100 (2), pp.165-174. 〈10.1016/j.annpal.2014.01.002〉</source>
<identifier>DOI : 10.1016/j.annpal.2014.01.002</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.annpal.2014.01.002</relation>
<language>en</language>
<subject lang=en>Cretaceous</subject>
<subject lang=en>France</subject>
<subject lang=en>Metriorhynchidae</subject>
<subject lang=en>Plesiosuchina</subject>
<subject lang=en>Teleosauridae</subject>
<subject lang=en>Valanginian</subject>
<subject>[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Thalattosuchia was a diverse clade of marine crocodylomorphs known from the Early Jurassic to the Early Cretaceous. Recent studies have hypothesized that their extinction was two-phased: (1) habitat loss near/at the Jurassic-Cretaceous boundary heavily reduced their morphofunctional diversity, particularly in Europe, while (2) climate change and a shift in marine fauna during the Early Cretaceous (either at the Valanginian-Hauterivian boundary or during the early Hauterivian) finished off the already stressed clade. Unfortunately, the Cretaceous fossil record of thalattosuchians is poor, with only one putative “teleosaurid” specimen and approximately ten metriorhynchid specimens. Here we re-describe the youngest known teleosaurid from the Cretaceous (Valanginian of south-eastern France). Originally considered to be a teleosaurid (possibly Steneosaurus), we demonstrate that it belongs to Metriorhynchidae, and a newly discovered subclade, Plesiosuchina. It differs from Plesiosuchus in the pattern of tooth enamel ornamentation and the variation in dentary alveoli size. Referring this specimen to Metriorhynchidae means there are no definitive Cretaceous teleosaurid specimens. Furthermore, it suggests that both durophagous and piscivorous teleosaurids became extinct at the end of the Jurassic. Interestingly, this is the fourth metriorhynchid lineage known to cross the Jurassic-Cretaceous boundary. As such, it would appear that the two thalattosuchian families responded very differently to the lowering sea levels at the end of the Jurassic: teleosaurids possibly became extinct, while metriorhynchids were seemingly unaffected.</description>
<date>2014</date>
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