Results 41 to 50 of about 303 (138)
Early Cretaceous choristoderes (Diapsida, Choristodera) from Siberia, Russia
Cretaceous Research, 2017 Abstract There are ten known Lower Cretaceous localities for skeletal remains of choristoderes in Siberia (Russia). Choristoderan remains at all these localities are represented by isolated bones, usually by isolated vertebrae of Choristodera indet.
Skutschas, Pavel P., Vitenko, Dmitriy D.
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First records of diapsid Palacrodon from the Norian, Late Triassic Chinle Formation of Arizona, and their biogeographic implications [PDF]
Acta Palaeontologica Polonica, 2018 Vertebrates from the Triassic Period have broadly disparate tooth shapes and dentition patterns, the result of intense morphospace experimentation following the Permo-Triassic extinction.
Ben T. Kligman +2 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2022 The enigmatic marine reptile Helveticosaurus zollingeri, from the Middle Triassic Besano Formation of Monte San Giorgio, is known from three specimens found in Swiss territory. This paper describes the first skeletal remains of this taxon recovered from
Gabriele Bindellini, CRISTIANO DAL SASSO
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Rhynchocephalians (Diapsida: Lepidosauria) from the Jurassic Kota Formation of India [PDF]
Zoological Journal of the Linnean Society, 2001 Despite their rarity today, rhynchocephalians formed a diverse Early Mesozoic clade with a comparatively good fossil record. They had a Pangaean distribution in the Late Triassic and Early Jurassic, although the Gondwanan record remains more limited than the Laurasian one. We report here on new sphenodontian material from the Jurassic Kota Formation of
S. E. EVANS +2 more
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Papéis Avulsos de Zoologia, 2011 La proporción entre el segundo y cuarto dígito (2D/4D) ha sido bien estudiada como un dimorfismo sexual que puede resultar de los efectos androgénicos prenatales sobre la expresión de los genes homeobox.
Mauricio Peñuela
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Osteohistology of hyperodapedontine rhynchosaurs from the Upper Triassic of Southern Brazil [PDF]
Acta Palaeontologica Polonica, 2015 The first osteohistological study focused exclusively on rhynchosaurs (non-archosauriform archosauromorphs), based on the hyperodapedontines Teyumbaita sulcognathus and Hyperodapedon sp., from the Upper Triassic of Southern Brazil, indicates a relatively
Fábio Hiratsuka Veiga +2 more
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A new phylogeny of ichthyosaurs (Reptilia: Diapsida) [PDF]
Journal of Systematic Palaeontology, 2017 The largest phylogenetic analysis of ichthyosaurs to date is presented, with 114 ingroup taxa coded at species level. Completeness of the taxa included varied from > 98% to < 2%; 10 taxa were removed a priori using Concatabominations due to incompleteness and taxonomic uncertainty.
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The origin of the turtle body plan: evidence from fossils and embryos
Palaeontology, Volume 63, Issue 3, Page 375-393, May 2020., 2020 Abstract The origin of the unique body plan of turtles has long been one of the most intriguing mysteries in evolutionary morphology. Discoveries of several new stem‐turtles, together with insights from recent studies on the development of the shell in extant turtles, have provided crucial new information concerning this subject.
Rainer R. Schoch +2 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2023 Discovery of two different morphologies of the hindlimb in specimens ascribed to the Triassic drepanosauromorph diapsid Megalancosaurus led to the erection of two distinct species within this genus: M. preonensis and M. endennae.
Silvio Renesto, FRANCO SALLER
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Journal of Anatomy, Volume 236, Issue 4, Page 630-659, April 2020., 2020 The skull of a well preserved specimen of Champsosaurus lindoei was computed tomography (CT) scanned to describe the cranial elements and comment on the putative choristoderan neomorphic bone. These data provide the first exhaustive description of a choristodere skull using CT scanning, and confirm the presence of the neomorphic bone lateral to the ...
Thomas W. Dudgeon +3 more
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