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the Early Jurassic, all non-averostran neotheropods had gone extinct. Averostra (or "bird snouts") is a clade within Neotheropoda that includes most theropod...
Cryolophosaurus as a dilophosaurid or a neotheropod outside of Dilophosauridae and Averostra, whereas the skull has many advanced features, leading the genus to be...
slightly more derived than the Coelophysoidea, and the sister group to the Averostra. The Dilophosauridae share features with the Coelophysoidea such as the...
Coelophysoids are classifed as basal neotheropods that lie outside of Averostra. Cladogram from Ezcurra et al. 2020: The cladogram below was recovered...
reclassified as Cf.Sarcosaurus, clading with Tachiraptor as a branch leading to Averostra. This specimen, NMS G.1994.10.1, consists on an isolated left tibia lacking...
the Averostra, the group all theropods belong to from the Middle Jurassic onwards, including the birds. Being a sister species of the Averostra, it was...
seen in the astragalus of living birds arose at least at the base of Averostra, when the ceratosaur and tetanuran lineages diverged from one another...
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