Family Polymorphinidae d'Orbigny 1839 (foram)
PaleoDB taxon number: 103764
Parent taxon: Nodosariacea according to A. R. Loeblich and H. Tappan 1984
Sister taxa: Ellipsolagenidae, Glandulinidae, Nodosariidae, Vaginulinidae
Subtaxa: Bullopora, Enantiodentalina, Eoguttulina, Falsoguttulininae, Polymorphina, Polymorphininae, Pseudopolymorphina, Pyrulina, Ramulina, Sigmomorphina
Ecology: stationary infaunal deposit feeder