Ten new species of neritid gastropods are described from the fossil record of the Pacific slope of North America. Nerita (Amphinerita) eos sp. nov., from northern California, is of Early Cretaceous (Hauterivian) age and is the earliest record of Amphi . . .

This paper presents the ?rst detailed paleontologic study of pre-Campanian (pre-late Late Cretaceous) Turritella sensu lato from the Paci?c slope of North America, mainly from outcrops in California. Seven species, two of which are new, have a cumulat . . .

One new subfamily, one new genus, and two new species of Late Cretaceous warm-water, shallow-marine bivalves from California are described and named. The mytilid Xenomytilus fons, gen. et sp. nov., from middle to uppermost Maastrichtian strata in cent . . .