Results 121 to 130 of about 540 (131)

Archosaur evolution during the Jurassic: a southern perspective [PDF]

, 2014
López-Arbarello, Adriana, Rauhut, Oliver W.M   +1 more
core  

Synchrotron imaging of dentition provides insights into the biology of and , the “last” toothed birds [PDF]

core   +1 more source

Endocranial development in non-avian dinosaurs reveals an ontogenetic brain trajectory distinct from extant archosaurs. [PDF]

Nat Commun
King L, Zhao Q, Dufeau DL, Kawabe S, Witmer L, Zhou CF, Rayfield EJ, Benton MJ, Watanabe A.   +8 more
europepmc   +1 more source

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The evolutionary and functional implications of the unusual quadrate of Longipteryx chaoyangensis (Avialae: Enantiornithes) from the Cretaceous Jehol Biota of China

Journal of Anatomy, 2021
AbstractWhile the morphology and evolution of the quadrate among early birds and through the evolutionary origin of birds is not well known, we add to knowledge about that past diversity through description of the morphology of the quadrate in the unusually elongate skull of the Cretaceous enantiornithine bird Longipteryx chaoyangensis. The lateral and
Thomas A. Stidham, Jingmai K. O'Connor
openaire   +2 more sources

An Archaeopteryx-like theropod from China and the origin of Avialae

Nature, 2011
Archaeopteryx is widely accepted as being the most basal bird, and accordingly it is regarded as central to understanding avialan origins; however, recent discoveries of derived maniraptorans have weakened the avialan status of Archaeopteryx. Here we report a new Archaeopteryx-like theropod from China.
Xing, Xu, Hailu, You, Kai, Du, Fenglu, Han   +3 more
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A marine hesperornithiform (Avialae: Ornithuromorpha) from the Maastrichtian of Japan: Implications for the paleoecological diversity of the earliest diving birds in the end of the Cretaceous

Cretaceous Research, 2020
Abstract Asian hesperornithiforms are extremely rare in contrast to North American records; thus, their diversity in Asia during the Cretaceous is unclear. Maastrichtian hesperornithiform materials have been reported from both fluvial and marine deposits in North America but only from fluvial deposits in Asia.
Tomonori Tanaka, Yoshitsugu Kobayashi, Kenji Ikuno, Tadahiro Ikeda, Haruo Saegusa   +4 more
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Anatomy ofPatagonykus puertai(Theropoda, Avialae, Alvarezsauridae), from the Late Cretaceous of Patagonia

Journal of Vertebrate Paleontology, 1997
ABSTRACT The fragmentary skeleton of a new Late Cretaceous avialan theropod from Patagonia is described. Patagonykus puertai possesses caudal trunk vertebrae that are slightly convex caudally. The last sacral centrum is ball-shaped caudally, a condition that is also found in the caudal vertebrae. Caudal synsacral vertebrae are keeled ventrally.
openaire   +1 more source

Avialae Washoe Co. Locomotion

There are many Avialae that call the valley of Washoe Co their home. This study had two periods of documentation, 11-1:45 and 3:30-4. The species of Avialae that were documented in locomotion are Columbidae, Anas platyrhynchos, Larus califoricus, Sturnus vulgaris, and Buteo.
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Faculty Opinions recommendation of An Archaeopteryx-like theropod from China and the origin of Avialae.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature, 2011
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Basal Avialae

2004
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