Austiniceras is a subgenus of Parapuzosia, the shell of which is commonly large, moderately involute, high whorled, with flat or convex sides that converge on a narrowly rounded venter. Primary ribs are sigmoid or concave.
Austiniceras is a subgenus of Parapuzosia, the shell of which is typically large, moderately curved, high whorled, with flat or convex sides that converge on a narrowly rounded ventral surface. Primary ribs are S-shaped or concave.