Class: Rotaliata    Subclass: Rotaliana    Order: Chilostomellida    Family: Alabaminidae
Oridorsalis Andersen, 1961

Oridorsalis plummerae
(Cushman, 1948)
identified by scientist   
Paleogene
North Africa

Oridorsalis tenerus
(Brady, 1884)
identified by M. Hesemann   
Quaternary
Greenland Sea

Oridorsalis westi
Andersen, 1961
identified by scientist   
Quaternary
off Brazil