Results 11 to 20 of about 652 (199)

Development and evolution of the notarium in Pterosauria [PDF]

open access: yesJournal of Anatomy, 2020
AbstractThe notarium is the structure formed by fusion of the dorsal vertebrae which occurred independently in pterosaurs and birds. This ankylosis usually involves two to six elements and in many cases, also includes the last cervical vertebra. Fusion can occur in different degrees, uniting the vertebral centra, the neural spines, the transverse ...
Alex Schiller Aires   +4 more
openaire   +3 more sources

A REEXAMINATION OF FOUR PROLACERTIFORMS WITH IMPLICATIONS FOR PTEROSAUR PHYLOGENESIS [PDF]

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2000
Traditionally, pterosaurs have been included within the Archosauriformes and many contemporary workers consider the Pterosauria the sister group to Lagosuchus, Scleromochlus and the Dinosauria.
DAVID PETERS
doaj   +2 more sources

Comparative Analysis of the Vertebral Pneumatization in Pterosaurs (Reptilia: Pterosauria) and Extant Birds (Avialae: Neornithes) [PDF]

open access: yesPLoS ONE, 2019
Birds and pterosaurs have pneumatic bones, a feature likely related to their flight capabilities but whose evolution and origin is still poorly understood.
Taissa Rodrigues, Richard Buchmann
exaly   +3 more sources

A Reappraisal of the Purported Gastric Pellet with Pterosaurian Bones from the Upper Triassic of Italy. [PDF]

open access: yesPLoS ONE, 2015
A small accumulation of bones from the Norian (Upper Triassic) of the Seazza Brook Valley (Carnic Prealps, Northern Italy) was originally (1989) identified as a gastric pellet made of pterosaur skeletal elements.
Borja Holgado   +4 more
doaj   +5 more sources

Reconstruction of the adductor chamber and predicted bite force in pterodactyloids (Pterosauria)

open access: yesZoological Journal of the Linnean Society, 2021
Abstract The reconstruction of jaw muscles is critical in establishing potential cranial functions; however, myological studies of extinct groups that have no descendants are difficult to perform and test. This is particularly true for pterosaurs, a group of extinct flying reptiles that present a plethora of cranial morphologies ...
Pêgas, Rodrigo V   +2 more
openaire   +3 more sources

Premaxillary crest variation within the Wukongopteridae (Reptilia, Pterosauria) and comments on cranial structures in pterosaurs

open access: yesAnais da Academia Brasileira de Ciências
Cranial crests show considerable variation within the Pterosauria, a group of flying reptiles that developed powered flight. This includes the Wukongopteridae, a clade of non-pterodactyloids, where the presence or absence of such head structures, allied ...
XIN CHENG   +3 more
doaj   +2 more sources

Comments on the Pteranodontidae (Pterosauria, Pterodactyloidea) with the description of two new species [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2010
Considered one of the best known flying reptiles, Pteranodon has been subject to several reviews in the last century. Found exclusively in the Upper Cretaceous Niobrara Formation and Pierre Shale Group 11 species have been attributed to this genus ...
Alexander W.A. Kellner
doaj   +5 more sources

Asociacion faunistica de vertebrados mesozoicos de la localidad de Galve (Teruel) [PDF]

open access: yesEstudios Geologicos, 2002
Los sedimentos del Tithónico-Barremiense de la Cuenca Ibérica aflorantes en los alrededores de la localidad de Galve (Teniel), son particularmente ricos en restos de vertebrados mesozoicos.
B. Sánchez Hemández
doaj   +2 more sources

Review of taxonomy, geographic distribution, and paleoenvironments of Azhdarchidae (Pterosauria)

open access: yesZooKeys, 2014
The taxonomy, geographic distribution, and paleoenvironmental context of azhdarchid pterosaurs are reviewed. All purported pteranodontid, tapejarid, and azhdarchid specimens from the Cenomanian Kem Kem beds of Morocco are referred to a single azhdarchid ...
Alexander Averianov
doaj   +6 more sources

Seazzadactylus venieri gen. et sp. nov., a new pterosaur (Diapsida: Pterosauria) from the Upper Triassic (Norian) of northeastern Italy [PDF]

open access: yesPeerJ, 2019
A new non-monofenestratan pterosaur with multicusped dentition, Seazzadactylus venieri, is described from the Upper Triassic (middle-upper Norian) of the Carnian Prealps (northeastern Italy). The holotype of S. venieri preserves a complete mandibular and
Fabio Marco Dalla Vecchia
doaj   +4 more sources

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