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Modern crocodilians' hearts are 4-chambered, but are smaller relative to body size and run at lower pressure than those of modern birds and mammals. They also have a pulmonary bypass, which makes them functionally 3-chambered when under water, conserving oxygen. a secondary palate, which allows the animal to eat and breathe at the same time.
[2] [3] It would have been 3 metres (9.8 ft) long when fully grown. [4] When first described in 1960, Archosaurus was considered the oldest known archosaur and a close relative of Proterosuchus from the Early Triassic. [2] [4] However, Archosauria in modern terms is considered a more restricted group which Archosaurus lies outside of.
Prestosuchidae (in its widest usage) is a polyphyletic grouping of carnivorous archosaurs that lived during the Triassic. They were large active terrestrial apex predators, ranging from around 2.5 to 7 metres (8.2 to 23.0 ft) in length. They succeeded the Erythrosuchidae as the largest archosaurs of their time. While resembling erythrosuchids ...
Evidence of the impact of function on the evolution of the lower jaw morphology in crocodile-line archosaurs is presented by Rawson et al. (2024). [16] A review of studies on the thermometabolism of crocodile-line archosaurs from the preceding 20 years is published by Faure-Brac (2024). [17]
"Rauisuchia" is a paraphyletic group of mostly large and carnivorous Triassic archosaurs. [2] Rauisuchians are a category of archosaurs within a larger group called Pseudosuchia, which encompasses all archosaurs more closely related to crocodilians than to birds and other dinosaurs. First named in the 1940s, Rauisuchia was a name exclusive to ...
A study on the morphology, preservation and taphonomy of the skin of Haestasaurus becklesii, and a review of sauropod skin morphology, is published by Pittman et al. (2022). [ 204 ] A study on the anatomy and phylogenetic affinities of Ligabuesaurus leanzai , based on data from new postcranial elements assigned to the holotype specimen and from ...
Gregory S. Paul inferred that Lagosuchus was one of the smallest Triassic archosaurs, with a weight of about 167 g, similar in size and ecology to a weasel or ferret. [9] Thomas Holtz estimated that Lagosuchus could have obtained a total length of 1.7 ft (51 cm) and a weight similar to that of a pigeon (50-500 g). [ 10 ]
Archosauriformes (Greek for 'ruling lizards', and Latin for 'form') is a clade of diapsid reptiles encompassing archosaurs and some of their close relatives. It was defined by Jacques Gauthier (1994) as the clade stemming from the last common ancestor of Proterosuchidae and Archosauria. [3]