|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 long median bar-centered six-rayed spicule and spinules forming a spherical shell. Spicule and first-order spinules more robust than other skeletal elements. Ray length different within a specimen. From ray to ray, first-order spinules developed at from one to three positions; longer rays with more spinule positions.|