High Quality Content by WIKIPEDIA articles! Avemetatarsalia is a clade name established by British palaeontologist Michael Benton in 1999 for all avesuchians that are closer to dinosaurs than to crocodiles. An improved description of the small archosaur Scleromochlus together with a cladistic analysis of its phylogenetic position demonstrated that Scleromochlus was more closely related to the dinosaurs than to the Crurotarsi but outside of the node-based clade Ornithodira as originally interpreted by Jacques Gauthier: the group containing the last common ancestor of the dinosaurs and the pterosaurs and all of its descendants

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