What is "codazziceras"

Codazziceras is an early Upper Cretaceous ammonite from the upper Cretaceous of Columbia (S.A), distinguished from Lyelliceras ( Lyelliceratidae) from which it is based and added to the Euomphaloceratinae (Acanthoceratidae). The type species is Lyelliceras scheibei.

The shell is rather evolute, ornamented with ribs and clavate tubercles. Ribs are fairly strong on the flanks but weaken as they cross the venter. Whorl section is compressed, moderately embracing, flanks convex, venter moderately flattened with three rows of tubercles that tend to be elongate in the direcion of coiling.