Gatunek typowy Icriodus latericrescens Branson et Mehl, 1938 Opis
Fusiform icrion on the ventral process, well denticulated dorsal process with a tendency to develop icrion on it and to reduce completely the rudimentary, undenticulated anterior process. The earlier described late Famennian icriodontid species with additional denticulated processes, attributed to Antognathus differ from those of the early Devonian Latericriodus mostly in their irregular shape and denticulation and in bending of the posterior process in the opposite direction (ventral, not dorsal). This may not be enough to substantiate a generic level distinction, as the specimens described below are morphologically and stratigraphically transitional. Unquestionable Latericriodus is unknown above the Givetian varcus Zone but its occurrence is generally disjunct. Synonimy Zasięg czasowy
Gedinnian-Famennian Literatura
Dzik, J. 2006. The Famennian "Golden Age" of conodonts and ammonoids in the Polish part of the Variscan sea. Palaeontologia Polonica 63, 1-359. |