Sediliopsis ondulum
Sediliopsis ondulum is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies. Description Distribution Fossils of this species were found in Pliocene strata of Florida, USA. References Fargo, William G. The Pliocene Turridae of Saint Petersburg, Florida. 1953; Monographs of the Academy of Natural Sciences of Philadelphia 18:365–409, pls. 16–24 ondulum Gastropods described in 1953