Radiolaria - Spumellaria - Xiphostylidae

Full reference: E. Pessagno, W. M. Six, and Q. Yang. 1989. The Xiphostylidae Haeckel and Parvivaccidae, n. fam, (Radiolaria) from the North American Jurassic. Micropaleontology 35(3):193-255

Belongs to Triactoma according to Pessagno and Yang 1989

Sister taxa: Triactoma amajacensis, Triactoma blakei, Triactoma cellulosa, Triactoma frequens, Triactoma hexeris, Triactoma hidalgoensis, Triactoma jonesi, Triactoma mexicana, Triactoma parablakei, Triactoma paramexicana, Triactoma prolongata, Triactoma rosespitensis, Triactoma spinosa, Triactoma tenuspinea, Triactoma tithonianum

Type specimen: USNM 424142

Ecology: passively mobile planktonic omnivore