Saxidomus nuttalli Conrad, 1837
California butterclam
Geological range: Early Miocene-Recent.
Geographic distribution: Recent: Northern California (41°N)-Baja California Sur (27°S). Reported from the San Pedro Sand (Pleistocene, California), Temblor Formation (Early Miocene, California), Topanga Formation (Middle Miocene, California), Wildcat Formation (Pliocene, California), and Quaternary marine terraces of California and Mexico.
