- Discosauriscus
-
Discosauriscus
Temporal range: Early PermianDiscosauriscus austriacus Scientific classification Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Amphibia sensu lato Order: Seymouriamorpha Family: Discosauriscidae Genus: Discosauriscus
Kuhn, 1933Species - D. austriacus (Makowsky, 1876)
- D. pulcherrimus (Fritsch, 1879) (type)
Synonyms - Letoverpeton Spinar, 1952
Discosauriscus was a small reptiliomorph that lived in Central and Western Europe in the Lower Permian Period. Its best fossils have been found in Boskovice Furrow, in the Czech Republic.
Classification
Discosauriscus belongs in alternative classifications to the order Anthracosauria or Seymouriamorpha, and is the type genus of the family Discosauriscidae. Currently recognised are two valid species - Discosauriscus austriacus and Discosauriscus pulcherrimus. Letoverpeton is a junior synonym of Discosauriscus.[1]
Characteristics
Discosauriscids are only known from larval or neotenic forms,[2] and three ontogenetic stages can be distinguished.[3] Discosauriscus had wide jaws with sharp teeth, short limbs and relatively long tail.[4] The phalangeal formula was 2-3-4-5-3 for both hind- and forelimbs. The body was covered with rounded scales with concentric rings, and a well preserved lateral-line system has been described.[5]
Discosauriscus may have had electroreceptive organs.[6]
References
- ^ Klembara, Jozef (1997). "The cranial anatomy of Discosauriscus Kuhn, a seymouriamorph tetrapod from the Lower Permian of the Boskovice Furrow (Czech Republic)". Philosophical Transactions of the Royal Society of London, Series B 352: 257–302. PMC 1691931. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1691931.
- ^ Carroll, R.L. 1988. Vertebrate Paleontology and Evolution, pp 176. WH Freeman and Company, New York ISBN 0-7167-1822-7
- ^ Klembara, Jozef. 1996. Discosauriscus. Version 01 January 1996. http://tolweb.org/Discosauriscus/17544/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/
- ^ dinosaurier-news - Discosauriscus: Ein Amphibium aus der Permzeit
- ^ Klembara, Jozef. 1996. Discosauriscus. Version 01 January 1996. http://tolweb.org/Discosauriscus/17544/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/
- ^ Klembara, J, Electroreceptors in the Lower Permian tetrapod Discosauriscus austriacus,Palaeontology, Vol 37, part 3, (1994)
Categories:- Reptiliomorphs
- Permian animals
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