|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Radiolaria - Archaeospicularia - Echidninidae
It was assigned to Hexactinellida by Sepkoski (2002); and to Echidninidae by Kozur et al. (1996), De Wever et al. (2001), Won and Iams (2002) and Noble et al. (2017).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|M.-Z. Won and W. J. Iams 2002||Individual spicules interlocked or fused, with or without losing their original spicular structure and forming generally an irregular to spherical hollow shell; spicules consisting of one(?), four, to ten rays. Commonly rays consisting of two vertical and more than four whorled rays. Rays arranged or fused so that no ray tip directed toward the center of the shell.|