Cylicioscapha

Cylicioscapha is an extinct genus of fossil mollusk, probably a gastropod, a robust-looking euomphalid from the upper Paleozoic of North America.

Cylicioscapha Temporal range: Middle Pennsylvanian - Middle Permian
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	?Gastropoda
Superfamily:	†Euomphaloidea
Family:	†Euomphalidae
Genus:	†Cylicioscapha Yochelson,1954

Description

The shell is depressed on both the upper and lower sides; the outer rim is flattish, knobby along the upper edge; the aperture, is more or less trapezoidal.

References

• J. Brooks Knight et al. 1960. Systematic Descriptions. Treatise on Invertebrate Paleontology Part I Mollusca 1. Geological Society of America and University of Kansas Press.