Cucullaeidae Stewart, 1930
Common Name: False Ark Shells
Key morphological features: Shells tend to be thick and are slightly oval in shape sometimes with ridges that run horizontally across the surface.
MOBILITY: Mobile (burrow)
FEEDING MODE: Suspension Feeder
HABITAT: Epifaunal, Semi-infaunal
Cox, L. R. et al. 1969. Bivalvia, in R. C. Moore ed., Treatise on Invertebrate Paleontology, Part N, Mollusca 6, Volume 2. The University of Kansas and Geological Society of America. 1224 pp.