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 Archaeocenosphaera according to

Sister taxa: Archaeocenosphaera clathrata, Archaeocenosphaera gregaria, Archaeocenosphaera hexagonata, Archaeocenosphaera mellifera, Archaeocenosphaera micropora, Archaeocenosphaera minuscula, Archaeocenosphaera radiata, Archaeocenosphaera ruesti

Type specimen: USNM 424134

Ecology: passively mobile planktonic omnivore