ammonites
Hemidiscus (foram)

Rhizaria - Ammodiscidae

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

Sister taxa: Ammodiscoides, Arenoturrispirillina, Bifurcammina, Spirillinoides, Spirosolenites

Subtaxa: none

Ecology: stationary epifaunal herbivore