Cuspidariidae Dall, 1886
Key morphological features: The cuspidariidae have oval shells with a beak-like projection, referred to as being rostrate.
FEEDING MODE: Carnivorre
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.