Primitiella
Small, straight-backed, equivalved shells with a broad undefined median depression mainly in the dorsal half of the valves and with narrow border (Bassler and Kellett, 1934).
Species
Primitiella claypolei (Jones, 1890)
Occurrence: Fulton
Reference: Dalvé, 1948; Bassler and Kellett, 1934
Originally named Leperditia claypolei
Primitiella whitfield (Jones, 1890)
Occurrence: Fulton
Reference: Dalvé, 1948; Bassler and Kellett, 1934
Originally named Primitia whitfieldi