Trematosaurus

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Trematosaurus
Temporal range: Early Triassic
Trematosaurus brauni.JPG
T. brauni skull
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Temnospondyli
Suborder: Stereospondyli
Family: Trematosauridae
Subfamily: Trematosaurinae
Genus: Trematosaurus
Burmeister, 1849
Species
  • T. brauni Burmeister, 1849 (type)
  • T. galae Novikov, 2010

Trematosaurus is an extinct genus of temnospondyl amphibian found in Germany and Russia.[1] It was first named by Hermann Burmeister in 1849 and the type species is Trematosaurus brauni.[1]

Classification[]

Below is a cladogram from Steyer (2002) showing the phylogenetic relationships of trematosaurids:[2]

Trematosauridae 
 Trematosaurinae 

Tertrema

Lyrocephaliscus

Platystega

Luzocephalus

Trematosaurus

Trematosuchus

 Lonchorhynchinae 

Aphaneramma

Erythrobatrachus

Cosgriffius

Stoschiosaurus

Wantzosaurus

Species[]

Valid species[]

T. brauni
  • The type species, Trematosaurus brauni (Burmeister, 1849) is known from the middle member of variegated sandstone in the vicinity of Bernburg, Germany.
  • T. galae (Novikov, 2010) is known from fragmentary specimens found in Lower Triassic Donskaya Luka locality (Volgograd Region), Russia.

Reclassified species[]

  • T. fuchsi (Seidlitz, 1920) is known from the same stratigraphic level of German Basin, Thuringia. It is a junior synonym of T. brauni.
  • T. thuringiensis (Werneburg, 1993) is also known from Thuringia.
  • T. madagascariensis (Lehman, 1966) referred by Schoch & Milner, 2000, to Tertremoides (Lehman, 1979).
  • South African T. kannemeyeri (Broom, 1909), described based on a skull fragment, most likely belongs to the genus Aphaneramma or a closely related lonchorhynchine.
  • Another South African species, T. sobeyi (Haughton, 1915), was assigned to its own genus Trematosuchus (Watson, 1919).
  • East European trematosaurid remains referred to Trematosaurus in fact belong to the genus Inflectosaurus Shishkin, 1960 (Novikov, 2007).

References[]

  1. ^ a b I. V. Novikov (2010). "New data on trematosauroid labyrinthodonts of Eastern Europe: 2. Trematosaurus galae sp. nov.: Cranial morphology". Paleontological Journal. 44 (4): 457–467. doi:10.1134/S003103011004012X.CS1 maint: uses authors parameter (link)
  2. ^ Steyer, J. S. (2002). "The first articulated trematosaur 'amphibian' from the Lower Triassic of Madagascar: implications for the phylogeny of the group". Palaeontology. 45: 771–793. doi:10.1111/1475-4983.00260.


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