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His analysis of the small Triassic archosaur Scleromochlus placed it within bird-line archosaurs but outside Ornithodira, meaning that Ornithodira was no longer equivalent to bird-line archosaurs. Below is a cladogram modified from Benton (2004) showing this phylogeny: [ 24 ]
Extinct archosaurs include non-avian dinosaurs, pterosaurs, and extinct relatives of crocodilians. Modern paleontologists define Archosauria as a crown group that includes the most recent common ancestor of living birds and crocodilians, and all of its descendants.
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
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. [311]
Aetosaurs belong to Pseudosuchia, a clade of archosaurs that includes living crocodilians and is characterized by the distinctive structure of the ankle bones. [dubious – discuss] Aetosaurs were traditionally referred to a (now obsolete) group called the thecodonts, which included all "primitive" crocodilian relatives that lived in the Triassic.
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 ]
A study on the morphology of dorsal vertebrae of extant and fossil archosaurs, and on its implications for inferring lung structure in non-avian dinosauriform archosaurs, is published by Brocklehurst, Schachner & Sellers (2018). [1] [2]