TY - JOUR N2 - The Indian Cave Sandstone (Upper Pennsylvanian, Gzhelian) from the area of Peru, Nebraska, USA, has yielded numerous isolated chondrichthyan remains and among them teeth and dermal denticles of the Symmoriiformes Zangerl, 1981. Two tooth-based taxa were identified: a falcatid Denaea saltsmani Ginter and Hansen, 2010, and a new species of Stethacanthus Newberry, 1889, S. concavus sp. nov. In addition, there occur a few long, monocuspid tooth-like denticles, similar to those observed in Cobelodus Zangerl, 1973, probably representing the head cover or the spine-brush complex. A review of the available information on the fossil record of Symmoriiformes has revealed that the group existed from the Late Devonian (Famennian) till the end of the Middle Permian (Capitanian). L1 - http://journals.pan.pl/Content/108910/PDF-MASTER/08_Ginter.pdf L2 - http://journals.pan.pl/Content/108910 PY - 2018 IS - No 3 EP - 401 KW - Symmoriiformes KW - Microfossils KW - Carboniferous KW - Indian Cave Sandstone KW - USA Midcontinent A1 - Ginter, Michał PB - Komitet Nauk Geologicznych PAN PB - Wydział Geologii UW VL - vol. 68 DA - 2018.10.01 T1 - Symmoriiform sharks from the Pennsylvanian of Nebraska SP - 391 UR - http://journals.pan.pl/dlibra/publication/edition/108910 T2 - Acta Geologica Polonica ER -