|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Was thought to be a sponge; later recognized to be an algae.
It was replaced with Prismostylus by Pojeta et al. (2003).
It was assigned to Tetradiidae by Murray (1985); to Tabulata by Sepkoski (2002); and to Rhodophyta by Steele-Petrovich (2009).
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.