Otolith description

Otolith large, ovate/rectangular. Dorsal margin approximately flat and irregular; ventral margin rounded and slightly sinuate; posterior margin irregular. Distal surface flat/irregular; proximal surface convex. Sulcus groove deep, heterosulcoid; opening may be ostial (but uncertain due to otolith damage). Colliculum heteromorph. Crista superior well developed and ridge-like; crista inferior well developed. Rostrum, antirostrum and excisura region damaged. Dorsal area depression deep rectangular. Ventral area depression shallow and broad.

0 0

Post a comment