Genasauria

Genasaurs Temporal range: Early Jurassic-Late Cretaceous, 199.6–65.5Ma PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Order:	†Ornithischia
Clade:	†Genasauria Sereno, 1986
Subgroups
†Lesothosaurus †Neornithischia †Thyreophora
Synonyms
Pachypoda Haeckel, 1895

Genasauria is an extinct clade of beaked, herbivorous dinosaurs. The group was first named by paleontologist Paul Sereno in 1986, and is typically split into Thyreophora, a group of armored dinosaurs; and Neornithischia, which included the horned and duck-billed dinosaurs. Genasauria, as defined by Sereno, consists of Ankylosaurus magniventris, Pachycephalosaurus wyomingensis, Parasaurolophus walkeri, Stegosaurus stenops, Triceratops horridus, their most recent common ancestor, and all descendants. The name Genasauria was used almost exclusively by Sereno for several years, but has gained greater usage in recent years.

References

• Sereno, P.C. (1986). "Phylogeny of the bird-hipped dinosaurs (order Ornithischia)". National Geographic Research 2(2): 234-256.

External links

• One definition of Genasauria
•  "Orthopoda". New International Encyclopedia. 1905.  An obsolete order that embraced at least two of its groups.