Radiolaria - Spumellaria - Parvivaccidae

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 Lanubus according to Pessagno and Yang 1989

Sister taxa: Lanubus alatus, Lanubus dickinsoni, Lanubus hattorii, Lanubus purus

Type specimen: USNM 424188

Ecology: passively mobile planktonic omnivore