New late Carboniferous chondrichthyans from the European Russia

(Mississippian) of European part of Russia are common, rather diverse and have been quite well studied (Romanowsky 1864, Trautschold 1874, Khabakov 1941, Obruchev 1977, Ivanov & Ginter 1996, Lebedev 1996, and others). The chondrichthyan assemblages from the Bashkirian–Moscovian (Pennsylvanian) of this territory have also been described in many publications (e.g. Traut­ schold 1879, Khabakov 1939, Obruchev 1951, Le bedev 2001, and others). However, chondrichthyan fishes are poorly known from the Kasimovian–Gzhelian of this area. The remains of diverse chondrichthyans were re­ cently found in the Kasimovian–Gzhelian deposits of the Moscow, Samara and Volgograd regions, and in the Bashkirian–Moscovian of the Republic of Bashkortostan. The remains are represented by isolated teeth and scales of various chondrichthyan groups and mostly belong to known taxa. However, three new taxa presented by teeth occurred in these stratigraphical intervals and regions, and are described in this paper.