Archosaur

Archosaurs are a group o diapsid amniotes whase livin representatives consist o birds an crocodilians. This group includes aw extinct dinosaurs an aa, extinct crocodilian relatives, an pterosaurs. Archosauria, the archosaur clade, is a croun group that includes the maist recent common auncestor o livin birds an crocodilians. It includes twa main clades: Pseudosuchia, whilk includes crocodilians an thair extinct relatives, an Avemetatarsalia, whilk includes birds an thair extinct relatives (lik non-avian dinosaurs an pterosaurs).

Archosaurs Temporal range: Early Triassic–Present, 250–0 Ma PreЄ Є O S D C P T J K Pg N
Birds an crocodilians (in this case a yellow-billed stork an a Nile crocodile) are the anerly livin archosaur groups.
Scientific classification
Kinrick:	Animalia
Phylum:	Chordata
Clade:	Crurotarsi
Clade:	Archosauria Cope, 1869
Subgroups
Avemetatarsalia (birds an thair extinct relatives) Pseudosuchia (crocodilians an thair extinct relatives) Incertae sedis †Avipes †Sikannisuchus †Smok
Synonyms
Arctopoda Haeckel, 1895 Avesuchia Benton, 1999