Latest Oligocene and Miocene whelks (Gastropoda: Neogastropoda: Buccinidae) from Peru

Misifulgur new genus includes fusiform buccinid gastropods with shells that are notably thin medially between the shoulder and base, have moderately long siphonal canals, spiral cords that are well developed anteriorly but often fade posteriorly, an inner lip without plications, a smooth inner surface of the outer lip, and no axial sculpture other than growth lines. The oldest Misifulgur, M. dockeryi new species, comes from lower Oligocene deposits in Mississippi. While no later records of Misifulgur are known from Gulf Coast states or Central America, Misifulgur whelks (i.e., M. sula(Olsson, 1931), M. cruziana(Olsson, 1932), M. macneili new species) are the most commonly preserved neogastropods from the latest Oligocene through middle Miocene on sandy substrates at shelf depths in the Peruvian Fauna] Province. The most recent Misifulgur, M. montemarensis new species, lived on protected sandy substrates along the coast of southern Peru during the late Miocene. The late Miocene extinction of Misifulgur was contemporaneous with the appearance on the inner shelf of possible competitors, especially muricids of the genus Chorus Gray, 1847.