|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Rhynchonellata - Atrypida - Protozygidae
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.
|P. Copper 1995||Small, elongate, globose, rectimarginate-bisul-cate shells; hypercline area; minute pedicle opening; medially directed spiralia with -four whorls; long jugum arising anteriorly.|