Otolith description

Otolith medium, oval/obovate. Dorsal margin lobed/ crenate; ventral margin slightly rounded and irregular; posterior margin irregular. Distal surface flat/ concave; proximal surface convex. Sulcus groove medium, heterosulcoid; opening ostial. Colliculum heteromorph. Collum wall-like. Crista superior well developed; crista inferior generally poorly developed or absent. Rostrum short and rounded. Excisura wide; notch shallow; angle wide. Dorsal area depression narrow and shallow. Ventral area depression absent, groove present.

0 0

Post a comment