Ammonitella yatesii J.G. Cooper, 1869
Glyptostoma gabrielense H.A. Pilsbry, 1938
Glyptostoma newberryanum (W.G. Binney, 1858)
Megomphix californicus A.G. Smith, 1960
Megomphix hemphilli (W.G. Binney, 1879)
Megomphix lutarius H.B. Baker, 1932
Polygyrella polygyrella (T.B. Bland & J.G. Cooper,1861)
Polygyroidea harfordiana (J.G. Cooper, 1870)