Neotheropoda (meaning "new theropods") is a clade that includes coelophysoids and more advanced theropod dinosaurs, and is the only group of theropods that survived the Triassic–Jurassic extinction event.

What is a (Neo)Theropod? The clade Neotheropoda was first coined by Bob Bakker (1986), and further defined by Sereno, 1998 and Nesbitt 2011.

2024年7月17日 · The clade comprised of Ceratosauria and Tetanurae has sometimes been called "Neotheropoda"; however, that name has come to mean the more inclusive group that also contains Coelophysidae and "dilophosaurs".

Ezcurra used Averostra for the ceratosaur+tetanurine clade in several papers, and in 2007 with Cuny gave it a new node-based phylogenetic definition with that extent- " Ceratosaurus nasicornis, Allosaurus fragilis, and all the descendants of their common ancestor."

2006年7月14日 · Neotheropoda (ceratosaurs plus tetanurines) appears to be a clade united by several features, such as asymmetrical premaxillary teeth (not cone-shaped as in more primitive forms), fewer maxillary teeth than coelophysoids, modifications of the jaw joint, and a fenestra in the lacrimal leading to hollow chambers.

Phylogeny: Neotheropoda: Podokesauridae + Zupaysaurus + (Cryolophosaurus + Dilophosaurus wetherilli + "Dilophosaurus" sinensis + Averostra + *) Size: estimated 5.5 to 6.5 meters long. Comments: known from a partial skull, which displays a mosaic of podokesaur and advanced theropod characteristics.

Our analysis places Daemonosaurus as more derived than Herrerasauridae and Eoraptor and more basal than the clade Tawa + Neotheropoda (see the electronic supplementary material for details; figure 3).

2016年1月20日 · Its occurrence close to the base of the Blue Lias Formation (Lower Jurassic, Hettangian) makes it the oldest known Jurassic dinosaur and it represents the first dinosaur skeleton from the Jurassic of Wales.

Strictly speaking, Neotheropoda ("new theropods") is anything but new, as it encompasses all but a handful of the most archaic theropods. But it is the only group of theropods that made it through the Triassic extinction event into the shiny new Jurassic period where they could show off their new-fangled hands and feet.

2019年3月26日 · Here I describe two neotheropod specimens from the Upper Triassic Bull Canyon Formation of New Mexico and place them in a broader comparative context of early theropod anatomy.