|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Orthida - Dicoelosiidae
It was corrected as Dicaelosia by Amsden (1951).
It was assigned to Dalmanellacea by Amsden (1951); to Dicoelosiidae by Wright (1964), Mitchell (1977), Jin and Chatterton (1997) and Williams et al. (2000); and to Orthida by Sepkoski (2002).
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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.