ammonites
Archaeocenosphaera Pessagno et al. 1989 (radiolarian)

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

Parent taxon: Xiphostylidae according to P. De Wever et al. 2001

Sister taxa: Amuria, Sinosphaera, Suna, Triactoma, Trigonosphaera, Tripocyclia, Xiphostylus, Zanola

Subtaxa: Archaeocenosphaera clathrata, Archaeocenosphaera gregaria, Archaeocenosphaera hexagonata, Archaeocenosphaera laseekensis, Archaeocenosphaera mellifera, Archaeocenosphaera micropora, Archaeocenosphaera minuscula, Archaeocenosphaera radiata, Archaeocenosphaera ruesti

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Ecology: passively mobile planktonic omnivore