A new species of Turritella, T. granti Valentine & Susuki, is based on a single specimen collected from lower Pleistocene Timms Point silt at Palos Verdes Hills, California. The species is distinguished by a high maximum of spiral sinus and a negative growth-line angle.

GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States