|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Asteroidea - Paxillosida - Astropectinidae
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.
|C. Neumann and H. Hess 2001||Small Coulonia species with comparatively long arms (R/r approx. 3/1); One row of actinals reach far into the arms; inferomarginals on interbrachial arc with deep fasciolar grooves that are less developed on the arms where ossicles are stouter; no larger spines on adambulacrals and probably none on inferomarginals.|