ammonites
Amphipternis Foreman 1973 (radiolarian)

Radiolaria - Nassellaria - Amphipyndacidae

Parent taxon: Amphipyndacidae according to P. De Wever et al. 2001

Sister taxa: Amphipyndax, Cyrtolagena, Palinandromeda, Parvifasus, Parvifavus, Triversus

Subtaxa: none

Ecology: passively mobile planktonic omnivore