|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
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.
|A. Boczarowski 2001||Flat, spindle−shaped plates, with perforate eyes at opposite ends of the spindle, where it narrows; in its middle part, there occurs a thin, perforate, protruding lamella.|