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Archosaurs are a subgroup of archosauriforms, which themselves are a subgroup of archosauromorphs. Both the oldest archosauromorph (Protorosaurus speneri) and the oldest archosauriform (Archosaurus rossicus) lived in the late Permian. The oldest true archosaurs appeared during the Olenekian stage (247–251 Ma) of the Early Triassic.
Asilisaurus was a lightly built animal with a fairly long neck (by early archosaur standards), a short snout tipped with a beak, and slender limbs. It probably walked on all four legs based on the length of its limbs.
Euparkeria is close to the ancestry of Archosauria, the reptile group that includes crocodilians, pterosaurs, and dinosaurs (including birds). Fossils of Euparkeria , including nearly complete skeletons, have been recovered from the Cynognathus Assemblage Zone (CAZ, also known as the Burgersdorp Formation ), which hosts the oldest advanced ...
This left crocodilians and birds as the two surviving archosaur groups. [56] A series of phylogenetic analyses in the late 1980s and 1990s strongly supported the proposal of Gow (1975). [54] [57] [53] [58] [59] Tanystropheus, Macrocnemus, Protorosaurus, and Prolacerta were always placed as members of Archosauromorpha, closer to archosaurs than ...
Avemetatarsalia (meaning "bird metatarsals") is a clade of diapsid reptiles containing all archosaurs more closely related to birds than to crocodilians. [2] The two most successful groups of avemetatarsalians were the dinosaurs and pterosaurs.
Nyasasaurus (meaning "Lake Nyasa lizard") is an extinct genus of avemetatarsalian archosaur from the putatively Middle Triassic Manda Formation of Tanzania that may be the earliest known dinosaur. The type species Nyasasaurus parringtoni was first described in 1956 in the doctoral thesis of English paleontologist Alan J. Charig , but it was not ...
The feel-good sitcom Family Matters premiered in 1989, and is perhaps best remembered for the family patriarch Carl Winslow’s (Reginald VelJohnson) feud with his nerdy neighbor Steve Urkel ...
Turi Emma King (born 31 December 1969) [4] is a Canadian-British professor of Public Engagement and Genetics at the University of Leicester.In 2012, King led the DNA verification during the exhumation and reburial of Richard III of England. [5]