†subfamily Histriastrinae Dumitrica 1989 (radiolarian)
Radiolaria - Spumellaria - Larnacillidae
Parent taxon: Larnacillidae according to P. De Wever et al. 2001
Sister taxa: Circodiscinae, Cryptolarnaciinae, Larnacillinae
Subtaxa: Amphimenium, Histiastrum, Stauralastrum, Stephanastrum
Type: Histiastrum
Ecology: passively mobile planktonic omnivore