''Ictidorhinus'' is an extinct

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

biarmosuchia Biarmosuchia is an extinct clade of non-mammalian synapsids from the Permian. Biarmosuchians are the most basal group of the therapsids. They were moderately-sized, lightly built carnivores, intermediate in form between basal sphenacodont " pel ...

n therapsids. Fossils have been found from the ''Dicynodon'' Assemblage Zone of the Beaufort Group in the Karoo Basin,

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

and are of

Late Permian Late or LATE may refer to: Everyday usage * Tardy, or late, not being on time * Late (or the late) may refer to a person who is dead Music * ''Late'' (The 77s album), 2000 * Late (Alvin Batiste album), 1993 * Late!, a pseudonym used by Dave Groh ...

age. It had a short snout and proportionally large orbits. These characteristics may be representative of a juvenile animal, possibly of '' Lycaenodon''. However, these two genera are not known to have existed at the same time, making it unlikely for ''Ictidorhinus'' material to be from a juvenile form of ''Lycaenodon''. Sidor, C. A. and Rubidge, B. S. (2006). ''Herpetoskylax hopsoni'', a new biarmosuchian (Therapsida: Biarmosuchia) from the Beaufort Group in South Africa. ''In:'' Matthew T. Carrano, Timothy J. Gaudin, Richard W. Blob and John R. Wible, eds., ''Amniote Paeobiology''. Chicago. University of Chicago Press. pp. 96. ''Ictidorhinus'' is the best-known representative of the family Ictidorhinidae, named by South African paleontologist

Robert Broom Robert Broom Fellow of the Royal Society, FRS FRSE (30 November 1866 6 April 1951) was a British- South African medical doctor and palaeontologist. He qualified as a medical practitioner in 1895 and received his DSc in 1905 from the University ...

in 1932. Many biarmosuchians have been identified as ictidorhinids since the family was first named, mostly on the basis of their small size. Several biarmosuchians from Russia have been classified as ictidorhinids on the basis of partial jaw bones alone. Recent

phylogenetic In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ...

studies of biarmosuchians have found that Ictidorhinidae is a

paraphyletic Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...

collection of species that fall outside the more derived clade Burnetiamorpha.

References

The main groups of non-mammalian synapsids at Mikko's Phylogeny Archive

External links

''Ictidorhinus''
in the

Paleobiology Database The Paleobiology Database (PBDB) is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database originated in the NCEAS-funded Phanerozoic Marine Pale ...

Biarmosuchia Prehistoric therapsid genera Lopingian synapsids of Africa Fossil taxa described in 1913 Taxa named by Robert Broom Lopingian genus first appearances Lopingian genus extinctions {{paleo-therapsid-stub

See also

References

External links