Results 81 to 90 of about 2,363 (235)
Cautionary tales on the use of proxies to estimate body size and form of extinct animals
Ecology and Evolution, Volume 14, Issue 9, September 2024.Reconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Joel H. Gayford +7 more
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, 1981 Published as part of John S. McIntosh, 1981, Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of Carnegie Museum of Natural History, pp.
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Cladistics, Volume 40, Issue 3, Page 307-356, June 2024.Abstract Gondwanan dinosaur faunae during the 20 Myr preceding the Cretaceous–Palaeogene (K/Pg) extinction included several lineages that were absent or poorly represented in Laurasian landmasses. Among these, the South American fossil record contains diverse abelisaurids, arguably the most successful groups of carnivorous dinosaurs from Gondwana in ...
Diego Pol +5 more
wiley +1 more source
Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria) [PDF]
Scientific Reports, 2019 AbstractAvimimids were unusual, birdlike oviraptorosaurs from the Late Cretaceous of Asia. Initially enigmatic, new information has ameliorated the understanding of their anatomy, phylogenetic position, and behaviour. A monodominant bonebed from the Nemegt Formation of Mongolia showed that some avimimids were gregarious, but the site is unusual in the ...
G. F. Funston +3 more
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The Anatomical Record, Volume 307, Issue 4, Page 1175-1238, April 2024.Abstract A vast array of pseudosuchian body plans evolved during the diversification of the group in the Triassic Period, but few can compare to the toothless, long‐necked, and bipedal shuvosaurids. Members of this clade possess theropod‐like character states mapped on top of more plesiomorphic pseudosuchian character states, complicating our ...
Sterling J. Nesbitt, Sankar Chatterjee
wiley +1 more source
Patterns of variation in fleshy diaspore size and abundance from Late Triassic–Oligocene
Biological Reviews, Volume 99, Issue 2, Page 430-457, April 2024.ABSTRACT Vertebrate‐mediated seed dispersal is a common attribute of many living plants, and variation in the size and abundance of fleshy diaspores is influenced by regional climate and by the nature of vertebrate seed dispersers among present‐day floras.
Duhita Naware, Roger Benson
wiley +1 more source
Taxonomic notes on Megapnosaurus and 'Syntarsus' (Theropoda: Coelophysidae)
, 2022 The genus name Syntarsus Raath 1969 is preoccupied by the genus Syntarsus Fairmaire 1869. The replacement name Megapnosaurus Ivie et al. 2001 was proposed but its usage is inconsistent due to both controversy on the validity of the nomenclatural act proposing Megapnosaurus and possible synonymy between it and Coelophysis Cope 1889.
McDavid, Skye N, Bugos, Jeb E
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Journal of Comparative Neurology, Volume 532, Issue 3, March 2024.Illustration of the endocranial doming, which can provide a proxy for the brain‐to‐endocranial cavity index, using the endocast of an adult of the iguanodont dinosaur Proa valdearinnoensis as an example. Abstract Although the brain fills nearly the entire cranial cavity in birds, it can occupy a small portion of it in crocodilians.
Fabien Knoll +2 more
wiley +1 more source
Andean Geology, 2009 Se presentan nuevos restos provenientes de estratos campaniano-maastrichtianos de la Formación Alien, en Salitral Ojo de Agua (Río Negro, Argentina), los cuales son asignables a Alvarezsauridae indet.
Leonardo Salgado +3 more
doaj
First record of Megaraptora (Theropoda, Neovenatoridae) from Brazil
Comptes Rendus Palevol, 2012 Abstract An isolated caudal vertebral centrum of a theropod dinosaur was discovered in the Bauru Basin (Late Cretaceous) of Brazil, in the Maastrichtian Sao Jose do Rio Preto Formation. The vertebral centrum has pneumatic features that are similar to those in the megaraptoran theropods Aerosteon , Megaraptor , and Orkoraptor .
Méndez, Ariel Hernán +2 more
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