Fig. 4

Paratrisopterus caspius otoliths. a SMF P 2657a, holotype of Otolithus (Gadidarum) insectus, refigured from Weiler (1943); b RGFAJ 25; b1 inner face of left otolith; b2 inner face of right otolith; b3 ventral view of right otolith. c SMF P 2922, paratype of O. (G.) insectus refigured from Schwarzhans (2010); c1 inner face; c2 ventral view. d PIN 3118/1, otolith found in situ in holotype of Paratrisopterus avus, refigured from Fedotov (1976); e SMF P 2665a, holotype of Otolithus (Macruridarum) acuminatus Weiler 1943. f SMF P 2729, paratype of O. (G.) insectus refigured from Schwarzhans (2010). g RGFAJ 24; g1 inner face: g2 dorsal view. h RGFAJ 26. i early Sarmatian of Barajevo, Serbia. j SMF PO 64778, Tortonian-Messinian (Syltian), Goch, northern Germany, refigured from Schwarzhans (2010) as Paratrisopterus irregularis (Gaemers 1973)