Results 11 to 20 of about 1,197 (196)

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   +5 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

Taxonomic review of the Ornithocheirus complex (Pterosauria) from the Cretaceous of England [PDF]

open access: yesZooKeys, 2013
Over a decade after the last major review of the Cambridge Greensand pterosaurs, their systematics remains one of the most disputed points in pterosaur taxonomy.
Taissa Rodrigues, Alexander Kellner
doaj   +4 more sources

The comparative energetics of the turtles and crocodiles. [PDF]

open access: yesEcol Evol, 2022
This paper discusses patterns in Dynamic Energy Budget parameters and implied traits that we found for turtles and crocodiles. We explain, for instance, why the proportionality of weight at birth with the square root of ultimate weight points to problems with water loss and nitrogen‐waste accumulation.
Marn N, Kooijman SALM.
europepmc   +2 more sources

The origin and evolution of air sacs in pterosaurs and their forerunners. [PDF]

open access: yesJ Anat
Pneumatized pterosauromorph vertebrae and their phylogenetic context. Abstract Although the existence of postcranial pneumaticity and the inferred presence of air sacs connected to the lungs are well established in Pterosauria, the origin of this system in pterosaurs remains unclear. We investigated skeletal pneumaticity in the Triassic pterosauromorph
Aureliano T   +4 more
europepmc   +2 more sources

A taxonomic and phylogenetic review of the anhanguerid pterosaur group Coloborhynchinae and the new clade Tropeognathinae [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Anhanguerids are a particular group of pterodactyloid pterosaurs, characterized mainly by their rostral sagittal crests, well laterally expanded jaw tips and enlarged anterior teeth.
Borja Holgado, Rodrigo V. Pêgas
doaj   +1 more source

Pterosaurs from the Late Cretaceous of Angola

open access: yesDiversity, 2022
Here, we describe the first pterosaur remains from Angola, an assemblage of fourteen bones from the Lower Maastrichtian marine deposits of Bentiaba, Namibe Province. One new species is introduced, Epapatelo otyikokolo, gen. et sp.
Alexandra E. Fernandes   +6 more
doaj   +1 more source

NEW PTEROSAUR SPECIMENS FROM THE KEM KEM BEDS (UPPER CRETACEOUS, CENOMANIAN) OF MOROCCO

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2011
Although pterosaurs from Africa are still rare, in recent years several specimens have been described from the Kem Kem beds (Upper Cretaceous, Cenomanian) of Morocco.
TAISSA RODRIGUES   +3 more
doaj   +2 more sources

Morphometric assessment of pterosaur jaw disparity [PDF]

open access: yesRoyal Society Open Science, 2018
Pterosaurs were a successful group of Mesozoic flying reptiles. They were the first vertebrate group to achieve powered flight and varied enormously in morphology and ecology, occupying a variety of niches and developing specialized feeding strategies ...
Charlie A. Navarro   +2 more
doaj   +1 more source

Oldest azhdarchid (Pterosauria) record from South America

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2023
Abstract Azhdarchid pterosaurs in South America were hitherto represented by two taxa coming from Coniacian-Santonian and Maastrichtian beds, of the Mendoza and Río Negro provinces, respectively, in Argentina. Here we report an incomplete pterosaur cervical vertebra from Cenomanian beds exposed at the east shore of Ezequiel Ramos Mexía Reservoir at the
Agnolín, Federico L.   +3 more
openaire   +2 more sources

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