Theoperidae is a family of radiolarians in the order

Nassellaria Nassellaria is an order of Rhizaria belonging to the class Radiolaria. The organisms of this order are characterized by a skeleton cross link with a cone or ring. Introduction Nassellaria is an order of Radiolaria under the class Polycystina. ...

Genera

'' Artopilium'' — '' Artostrobus'' — '' Bathropyramis'' — '' Calocyclas'' — '' Clathrocyclas'' — '' Conarachnium'' — '' Conicavus'' — '' Cornutella'' — '' Corocalyptra'' — '' Cycladophora'' — '' Cyrtolagena'' — '' Cyrtopera'' — '' Dictyocephalus'' — '' Dictyoceras'' — '' Dictyocodon'' — '' Dictyophimus'' — '' Eucecryphalus'' — '' Eucyrtidium'' — '' Gondwanaria'' — '' Lipmanella'' — '' Litharachnium'' — '' Lithocampe'' — '' Lithomitra'' — '' Lithopera'' — '' Lithopilium'' — '' Lithostrobus'' — '' Lophocorys'' — '' Lophocyrtis'' — '' Peripyramis'' — '' Perypiramis'' — '' Phrenocodon'' — '' Plectopyramis'' — '' Pterocanium'' — '' Pterocyrtidium'' — '' Sethoconus'' — '' Stichocorys'' — '' Stichopera'' — '' Stichopilidium'' — '' Theocalyptra'' — '' Theocorys'' — '' Theopilium''

References

External links

* * Polycystines Radiolarian families {{Radiolarian-stub