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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.
[1] [2] In some archosaur species, the opening has closed but its location is still marked by a depression, or fossa, on the surface of the skull called the antorbital fossa. The antorbital fenestra houses a paranasal sinus that is confluent with the adjacent nasal capsule. [ 3 ]
This article records new taxa of fossil archosaurs of every kind that are scheduled described during the year 2025, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2025. Paleontology portal; History of science portal; dinosaurs portal
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 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 ...
A study on the nature of the observed variation in morphology and size of skulls of Bagaceratops rozhdestvenskyi is published online by Czepiński (2019), who considers the species Gobiceratops minutus, Lamaceratops tereschenkoi, Platyceratops tatarinovi and Magnirostris dodsoni to be junior synonyms of B. rozhdestvenskyi.
Archosauromorpha (Greek for "ruling lizard forms") is a clade of diapsid reptiles containing all reptiles more closely related to archosaurs (such as crocodilians and dinosaurs, including birds) than to lepidosaurs (such as tuataras, lizards, and snakes). [1]
A study on the morphology of teeth of Europasaurus holgeri is published by Régent et al. (2024), who report evidence interpreted as indicative of the presence of a strong connective tissue that partially covered the teeth, and argue that such structure might have been present in other members of Eusauropoda. [238]