Hipposaurus

Hipposaurus ('horse lizard') is an extinct genus of basal therapsids known from the Tapinocephalus Assemblage Zone of the Main Karoo Basin, South Africa. Chronologically this is within the Capitanian stage of the Guadalupian Series (Middle Permian). The genus was first described by S.H. Haughton as H. boonstrai on the basis of a skull and associated skeleton[1] and was later considered a gorgonopsian in the family 'Ictidorhinidae' by Robert Broom.[2] It is now considered a basal biarmosuchian,[3] but its affinities remain uncertain. H.boonstrai is currently known from only two specimens in the Iziko South African Museum, Cape Town.

This article is about one of the first therapsids. For the artiodactyl, see Hippopotamus.

Hipposaurus
Temporal range: Capitanian,
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Suborder: †Biarmosuchia
Family: †Hipposauridae
Genus: †Hipposaurus
Haughton, 1929
Species
  • H. boonstrai
  • H. brinki
Restoration of H. boonstrai

"H.brinki" is based on a single skull that was described by D. Sigogneau in 1970;[4] however, the poor condition of the holotype means most considerations of biarmosuchians ignore it.

See also

References
  1. Haughton, S.H. (1929). On some new therapsid genera. Annals of the South African Museum, 28, 55-78.
  2. Broom, R. 1932. The mammal-like reptiles of South Africa and the origin of mammals. Witherby, London, 376 pp.
  3. Sigogneau-Russell, D. 1989. Theriodontia I. Pp. 1-127. In Wellnhofer, P. (ed.). Encyclopedia of paleoherpetology, Part 17B. Gustav Fischer, Stuttgart.
  4. Sigogneau, D. 1970. Révision systématique des gorgonopsiens Sud Arficains. Cahiers de Paléontologie, Paris. [In French]
General


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