Isadia
Isadia is an extinct genus of prehistoric freshwater ray-finned fish from the order Eurynotoidiformes. It is known from the Permian of European Russia. The genus Amblypterina is partially considered a junior synonym of both Isadia and Kichkassia.
The following species are known:I. arefievi Minikh et al. 2015 I. aristoviensis Minikh, 1990 'I. suchonensis'''''