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Non-crocodilian reptiles have 3-chambered hearts, which are less efficient because they let the two flows mix and thus send some de-oxygenated blood out to the body instead of to the lungs. 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.
The name Pseudosuchia was originally given to a group of superficially crocodile-like prehistoric reptiles from the Triassic period, but fell out of use in the late 20th century, especially after the name Crurotarsi was established in 1990 to label the clade (evolutionary grouping) of archosaurs encompassing most reptiles previously identified as pseudosuchians.
Modern crocodilians, a subgroup of Neosuchia, emerged during the Late Cretaceous. [8] Crocodylomorph diversity was severely reduced by the end-Cretaceous extinction event . [ 9 ] The last group of terrestrially adapted crocodylomorphs was the Sebecidae , a group of large predatory notosuchians which persisted in South America until the middle ...
The first fossil materials were collected by an expedition of South African Museum in April 1963 led by Alfred W. Crompton. [1] The materials were collected from the Lower Jurassic Red Bed Formation (= Upper Elliot Formation) of the Stormberg, so that as soon as they found out that the fossils belongs to a new crocodilian species, they named the species Orthosuchus Stormbergi in a paper ...
A crocodile-like creature bit the neck of a flying dinosaur some 76 million years ago – and scientists have proof. Archaeologists found the fossilized neck bone of the young pterosaur in Canada ...
But dinosaur brain cases more closely resemble those of modern-day reptiles like crocodiles, Caspar said. For animals like crocodiles, brain matter occupies only 30% to 50% of the brain cavity.
Deinosuchus (/ ˌ d aɪ n ə ˈ sj uː k ə s /) is an extinct genus of alligatoroid crocodilian, related to modern alligators and caimans, that lived 82 to 73 million years ago (Ma), during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos (δεινός), "terrible", and soukhos ...
A Brazilian scientist has identified fossils of a small crocodile-like reptile that lived during the Triassic Period several million years before the first dinosaurs. The fossils of the predator ...