|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Radiolaria - Archaeospicularia - Echidninidae
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||A spicular skeleton of two vertical and four to eight whorled, very long, curved rays. Rays bearing subsidiary spinules on their proximal parts, but a few rays without spinules or with far fewer spinules than on the other rays.|