Lysorophus

Lysorophus is a genus of Lysorophia, extinct Permian Lepospondyl tetrapods.The Paleobiology Database http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=37322&is_real_user=1 Most of the specimens are found from North America and attributed to the first formally described species Lysorophus tricarinatus due to the lack of diagnostic characters, but several other species have been described.Wellstead, C.F., Taxonomic revision of the Lysorophia, Permo-Carboniferous lepospondyl amphibians. Bull. Am. Mus. Nat. Hist. 209:1–90 (1991) Lysorophus were small salamander-like amphibians.S.W. Williston, Lysorophus, a Permian Urodele, Biological Bulletin 15 (1908), pp. 229–240Sollas, W.J.On the Structure of Lysorophus, as Exposed by Serial Sections. Philosophical Transactions of the Royal Society of London. Series B, Vol 209, pp. 481-527 They lived in fresh water, aestivating in burrows during dry periods.Olson, E.C. A Skeleton of Lysorophus tricarinatus (Amphibia: Lepospondyli) from the Hennessey Formation (Permian) of Oklahoma. Journal of Paleontology, vol.45, 3 (1971)Hembree, D.I. et al., Amphibian burrows and ephemeral ponds of the Lower Permian Speiser Shale, Kansas: evidence for seasonality in the midcontinentPalaeogeography, Palaeoclimatology, Palaeoecology 203 (2004) p.127-152