|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Pterobranchia - Dithecoidea
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.
|R. B. Rickards et al. 1990||Stipes slender, branching infrequently; thecae with pronounced isolate portion with traces of fusellar structure, and considerable adnate portion in some.|