Avetheropoda

Avetheropoda
Deinonychus , a dromaeosaurid
Temporal occurrence
Norium ( Upper Triassic ) to Maastrichtian ( Upper Cretaceous ) (birds up to now )
228 to 66 (or until today) million years
Locations
Worldwide
Systematics
Ornithodira Dinosaur (dinosauria) Lizard dinosaur (Saurischia) Theropoda Tetanurae Avetheropoda
Scientific name
Avetheropoda
Paul , (1988)

As Avetheropoda (from Aves (birds) and Theropoda ( synonym : Neotetanurae)) the two more progressive theropod groups Carnosauria and Coelurosauria are combined. It was named because of the fact that the feathered dinosaurs, including birds, belong to this taxon.

The Avetheropoda differ from original theropod groups such as the Ceratosauria and the Spinosauroidea by some derived characteristics . These include an additional skull window in the upper jaw, modifications to the palate, rear skull , pelvis and hind legs. In addition, the area where the tail is stiffened is shifted more towards the body.

Systematics

• Avetheropoda
  • Avetheropoda incertae sedis
    • Bahariasaurus
    • Gasosaurus
    • Ozraptor
    • Quilmesaurus
    • Shanyangosaurus
    • Valdoraptor
  • Carnosauria
  • Coelurosauria

literature

• David E. Fastovsky , David B. Weishampel : The Evolution and Extinction of the Dinosaurs. 2nd edition. Cambridge University Press, Cambridge 2005, ISBN 0-521-81172-4 .