| 词条 | Discosauriscus |
| 释义 |
| fossil_range = {{Fossilrange|Cisuralian|Cisuralian|Cisuralian}} | image = Letoverpeton austriacum.JPG | image_caption = Discosauriscus austriacus | taxon = Discosauriscus | authority = Kuhn, 1933 | subdivision_ranks = Species | subdivision =
| synonyms =
}} Discosauriscus was a small reptiliomorph,[1] It lived in what is now Central and Western Europe in the Early Permian Period. Its best fossils have been found in Boskovice Furrow, in the Czech Republic. ClassificationDiscosauriscus belongs to the order 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.[2]CharacteristicsDiscosauriscids were long thought to be known from larval or neotenic forms,[3] and three ontogenetic stages had been distinguished.[4] However, more recent studies concluded that some subadult, probably terrestrial specimens were known,[5][6] so the case for neoteny in this taxon is not as well-supported as once thought. Discosauriscus had wide jaws with sharp teeth, short limbs and relatively long tail.[7] 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.[4] Discosauriscus may have had electroreceptive organs.[8]References1. ^Panchen, A. L. and Smithson, T. R. 1988. The relationships of the earliest tetrapods. Pp. 1-32 in Benton, M. J. (ed), The Phylogeny and Classification of the Tetrapods, Volume 1: Amphibians, Reptiles, Birds. Clarendon Press, Oxford. {{Portal|Paleontology}}{{Taxonbar|from=Q2279031}}{{Early tetrapods}}2. ^{{cite journal |last=Klembara |first=Jozef |year=1997 |title=The cranial anatomy of Discosauriscus Kuhn, a seymouriamorph tetrapod from the Lower Permian of the Boskovice Furrow (Czech Republic) |journal=Philosophical Transactions of the Royal Society of London, Series B |volume=352 |issue= |pages=257–302 |pmc=1691931|bibcode = 1997RSPTB.352..257K |doi=10.1098/rstb.1997.0021}} 3. ^Carroll, R.L. 1988. Vertebrate Paleontology and Evolution, pp 176. WH Freeman and Company, New York {{ISBN|0-7167-1822-7}} 4. ^1 Klembara, Jozef. 1996. Discosauriscus. Version 1 January 1996. http://tolweb.org/Discosauriscus/17544/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/ 5. ^{{cite journal | last1 = Sanchez | first1 = S | last2 = Klembara | first2 = J | last3 = Castanet | first3 = J | last4 = Steyer | first4 = JS | year = 2008 | title = Salamander-like development in a seymouriamorph revealed by palaeohistology | journal = Biology Letters | volume = 4 | issue = | pages = 411–414 | doi=10.1098/rsbl.2008.0159 | pmid=18460423 | pmc=2610144}} 6. ^{{cite journal |last=Kriloff |first=A. |author2=Germain, D. |author3= Canoville, A. |author4= Vincent, P. |author5= Sache, M. |author6= Laurin, M. |year=2008 |title=Evolution of bone microanatomy of the tetrapod tibia and its use in palaeobiological inference |journal=Journal of Evolutionary Biology |volume=21 |issue=3 |pages=807–826 |doi=10.1111/j.1420-9101.2008.01512.x |pmid=18312321}} 7. ^dinosaurier-news - Discosauriscus: Ein Amphibium aus der Permzeit {{webarchive |url=https://archive.is/20120708200445/http://dinosaurier-news.blog.de/2005/08/20/discosauriscus_ein_amphibium_aus_der_per |date=8 July 2012 }} 8. ^Klembara, J, Electroreceptors in the Lower Permian tetrapod Discosauriscus austriacus, Palaeontology, Vol 37, part 3, (1994) 3 : Basal tetrapods of Europe|Seymouriamorphs|Permian tetrapods |
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