Eucochlis Knight, 1933

Australian Carboniferous species. Eucochlis australis Yoo, 1988, from 'Marohn" Eucochlis depressa n.sp., from Swains Gully;' Eucochlis umbiliparva n.sp., from Swains Gully; Eucochlis sp., from Glenbawn.

Remarks. All four Australian forms are similar in size and ornament. Eucochlis australis Yoo, Eucochlis depressa n.sp. and Eucochlis sp. are moderately phaneromphalous and have fine spiral threads, while Eucochlis umbiliparva n.sp. is minutely phaneromphalous and has no spiral threads. Eucochlis depressa has an exceptionally depressed final whorl, and Eucochlis sp. has a low spire and much inflated final whorl.