|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
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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.
|P. Y. Parkhaev and Y. Demidenko 2010||"Dorsum bears sclerites of two types, i.e., two relatively large low-conical shell plates on anterior and posterior parts of body (posterior or both plates can be reduced), and numerous scaly sclerites on rest of surface."|