none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Anomalinoides umbonatus (Cushman, 1925)
The identification is based upon:
, : Cushman, J. A. (1925). An Eocene fauna from the Moctezuma River, Mexico. Bulletin of the American Association of Petroleum Geologists. 9: 298-303. Plate , Fig.