Complex sentence: The shell is oval, narrowed anteriorly as in other "Monodilepas" species, but with a slightly smaller foramen, and different sculptural development in that the radials are dominant with the concentric ridges very weak and confined to the early stages of the shell.
Split into simpler sentences: The shell is oval, narrowed anteriorly as in other "Monodilepas" species, but with a slightly smaller foramen, and different sculptural development, in that the radials are dominant. The concentric ridges are very weak and confined to the early stages of the shell.