ammonites
Bykovaeina (foram)

Rhizaria - Psammosphaeridae

Parent taxon: Psammosphaerinae according to A. R. Loeblich and H. Tappan 1988

Sister taxa: Anictosphaera, Cellonina, Psammophax, Pseudastrorhiza, Spiculosiphon, Storthosphaera, Thuramminoides, Thuramminopsis

Subtaxa: none

Ecology: stationary infaunal detritivore