Poromyidae Dall, 1886
Key morphological features: Poromyidae shells are rounded and elongate with radial ribbing.
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.