Turritella ocoyana Conrad, 1855
Ocoya turretsnail
Geological range: Late Oligocene-Middle Miocene.
Geographic distribution: Reported from the Branch Canyon Formation (Middle Miocene, California), Ferrotepec Formation (Middle Miocene, California), Lompico Sandstone (Middle Miocene, California), Rincon Formation (Late Oligocene, California), Rosarito Beach Formation (Middle Miocene, Mexico), Temblor Formation (Early Miocene), Topanga Formation (Middle Miocene, California), Vaqueros Formation (Early Miocene, California), and Ysidro Formation (Middle Miocene, Mexico).