Full reference: B. L. Clark and J. W. Durham. 1946. Eocene Faunas from the Department of Bolivar, Colombia. Geological Society of America Memoir 16:1-126
Type specimen: CAS 34971, a shell. Its type locality is U.C. Loc S 7333, which is in the Eocene of conglomerate Colombia.
Ecology: epifaunal grazer
Average measurements (in mm): shell 21.0 x 10.0