Trematosauria

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Trematosauria
Temporal range: Early Triassic - Middle Cretaceous
Skeleton of Koskinonodon perfecta in the American Museum of Natural History
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: "Amphibia" (wide sense)
Order: Temnospondyli
Clade: Stereospondylomorpha
Suborder: Stereospondyli
Clade: Trematosauria
Romer, 1947
Clades

Trematosauria is one of two major groups of temnospondyl amphibians that survived the Permian-Triassic extinction event, the other (according to Yates and Warren 2000) being the Capitosauria. The trematosaurs were a diverse and important group that included many medium-sized to large forms that were semi-aquatic to totally aquatic. The group included long-snouted forms such as the trematosauroids and short, broad-headed forms such as the metoposaurs. Although most groups did not survive beyond the Triassic, one lineage, the brachyopoids, continued until the Cretaceous period.

Classification[edit]

Phylogeny[edit]

Cladogram after Yates and Warren (2000):[1][2]

Trematosauria

Trematosauroidea




Metoposauroidea




Plagiosauroidea




Rhytidosteidae




Brachyopidae



Chigutisauridae







References[edit]

  1. ^ Yates, A.M.; and Warren, A.A. (2000). "The phylogeny of the ‘higher’ temnospondyls (Vertebrata: Choanata) and its implications for the monophyly and origins of the Stereospondyli". Zoological Journal of the Linnean Society 128 (1): 77–121. doi:10.1111/j.1096-3642.2000.tb00650.x. 
  2. ^ Sues, H.-D.; and Fraser, N.C. (2010). Triassic Life on Land: The Great Transition. New York: Columbia University Press. p. 236. ISBN 0-231-13522-X. 

External links[edit]