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Archosaurs include the only living dinosaur group — birds — and the reptile crocodilians, plus all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosaur palaeontology is the scientific study of those animals, especially as they existed before the Holocene Epoch began about 11,700 years ago.
Dinosaurs evolved from archosaurs with this hip arrangement. The hip sockets faced downwards and the knobs on the femurs were in line with the femur. This "pillar-erect" arrangement appears to have evolved independently in various archosaur lineages, for example it was common in "Rauisuchia" (non-crocodylomorph paracrocodylomorphs ) and also ...
A study on changes of diversity of dinosaurs belonging to the families Ankylosauridae, Ceratopsidae, Hadrosauridae, Dromaeosauridae, Troodontidae and Tyrannosauridae during the Late Cretaceous is published by Condamine et al. (2021), who interpret their findings as indicative of a decline of non-avian dinosaur diversity during the last 10 ...
At an estimated 5 to 6 metres (16 to 20 ft) in length, Smok was the largest carnivorous archosaur in central Europe in the time it was alive. It was larger than any other known theropod dinosaur or pseudosuchian living in central Europe during either the Late Triassic or Early Jurassic. The skull is 50 to 60 centimetres (20 to 24 in) long.
Archosaurus (meaning "ruling lizard") is an extinct genus of carnivorous proterosuchid archosauriform reptile. [1] Its fossils are dated to the latest Permian of Russia and Poland, it is one of the earliest known archosauriforms.
A study on the duration of Late Cretaceous megaherbivore dinosaur assemblage zones in the 100 m thick stratigraphic section exposed at Dinosaur Provincial Park (Alberta, Canada) is published by Eberth et al. (2023), who interpret their findings as indicating that the dinosaur assemblage zones in the studied section had duration time of ~600 ...
A study on the diversity of form and function of teeth in early-diverging dinosaurs is published by Ballell, Benton & Rayfield (2022), providing evidence of a previously unrecognized functional diversity in the dentitions of early dinosaurs, and indicating that either carnivory or omnivory was the ancestral diet of dinosaurs, with obligate ...
A study on patterns of evolutionary integration among regions of the archosaur skull, based on data from extant and fossil taxa, is published by Felice et al. (2019). [1]A review of the biogeographic history of crocodyliforms, sauropod dinosaurs, nonavian theropod dinosaurs and mammals from the Mesozoic of Gondwana is published by Krause et al. (2019).