The first "osteolepiform" tetrapodomorph (Sarcopterygii) from the Paleozoic sequences of the Moravian Karst (Czech Republic)

Hedvika POUKAROVÁ, Tomáš WEINER
2016 Geological Quarterly  
1 Masaryk Uni ver sity, De part ment of Geo log i cal Sci ences, Fac ulty of Sci ence, Kotláøská 2, 611 37 Brno, Czech Re pub lic 2 In sti tute of Ge ol ogy of the Czech Acad emy of Sci ences, v.v.i., Rozvojová 269, 165 00 Prague 6, Czech Re pub lic Poukarová, H., Weiner, T., 2016. The first "osteolepiform" tetrapodomorph (Sarcopterygii) from the Pa leo zoic se quences of the Moravian Karst (Czech Re pub lic). Geo log i cal Quar terly, 60 (3): 737-745, doi: 10.7306/gq.1301 The first
more » ... ph spec i men from the Pa leo zoic se quences of the Moravian Karst (Moravo-Silesian Ba sin, Bo he mian Mas sif, Czech Re pub lic) is de scribed. The well-pre served, cosmine-cov ered lat eral extrascapular bone co mes from the Upper De vo nian (Famennian) hemipelagic Køtiny Lime stone of the Líšeò For ma tion. The af fin ity to the "osteolepiforms" is inferred from the cosmine his tol ogy and mor pho log i cal fea tures of the bone. As sign ment to the Megalichthyiformes seems most prob a ble. The as so ci ated fauna, e.g., clymenids, orthocone nautiloids, thin shelled bi valves, trilobites and cri noids, clearly dem on strate a ma rine en vi ron ment. Ac knowl edge ments. Thanks are due to O. Fatka and J. Kalvoda for their help ful com ments. We are grate ful to J. Štelcl for prep a ra tion of the scan ning elec tron mi cro graphs and T. Viktorýn for his kind help in the field. Cor dial thanks are ad dressed to the re view ers J. Clack and M. Ginter for their useful sug ges tions. This con tri bu tion was sup ported by the Czech Sci ence Foun da tion pro ject GA14-18183S and In sti tute Research Plan RVO67985831. be fore the Frasnian/Famennian event: fa cies, compositional vari a tions and gamma-ray spec trom e try. Fa cies, 53: 293-316. Bemis, W.E., Northcutt, R.G., 1992. Skin and blood ves sels of the snout of the Aus tra lian lungfish, Neoceratodus forsteri, and their sig nif i cance for in ter pret ing of cosmine of de vo nian lungfishes. Acta Zoologica, 73: 115-139. The first "osteolepiform" tetrapodomorph (Sarcopterygii) from the Paleozoic sequences of the Moravian Karst (Czech Republic) 743 Borgen, U.J., 1989. Cosmine re sorp tion struc tures on three osteolepid jaws and their bi o log i cal sig nif i cance. Lethaia, 22: 413-424. Borgen, U.J., 1992. The func tion of the cosmine pore ca nal sys tem. In: Fos sil fishes as liv ing an i mals (ed. E. Mark-Kurik): 141-150. Acad emy of Sci ences of Es to nia, Tallinn. Chang, M-M., Smith, M.M., 1992. Is Youngolepis a Porolepiform? Jour nal of Ver te brate Pa le on tol ogy, 12: 294-312. Clack, J.A., 2006. The emer gence of early tetra pods. Palaeo geogra phy, Palaeoclimatology, Palaeo ec ol ogy, 232: 167-189. Cloutier, R., Ahlberg, P.E., 1996. Mor phol ogy, char ac ters, and the in ter re la tion ships of basal Sarcopterygians. In: In ter re la tionships of Fishes (eds. M.L.J. Stiassny, L.R. Parenti and G.D. John son): 445-479. Ac a demic Press, San Diego. Coates, M.I., Fried man, M., 2010. Litoptychus bryanti and char acter is tics of stem tetrapod neurocrania. In: Mor phol ogy, Phy logeny and Paleobiogeography of Fos sil Fishes (eds.
doi:10.7306/gq.1301 fatcat:ncvcbxumujcd3ccnbmzde4ktae