Trematosauria

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

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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.[1] Although most groups did not survive beyond the Triassic, one lineage, the brachyopoids, continued until the Cretaceous period.

Classification

Phylogeny

Cladogram after Yates and Warren (2000):[2][3]

Trematosauria

Trematosauroidea




Metoposauroidea




Plagiosauroidea




Rhytidosteidae




Brachyopidae



Chigutisauridae







References

  1. Brusatte, S. L., Butler R. J., Mateus O., & Steyer S. J. (2015). A new species of Metoposaurus from the Late Triassic of Portugal and comments on the systematics and biogeography of metoposaurid temnospondyls. Journal of Vertebrate Paleontology. e912988., 2015:
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External links