|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Gastropoda - Fissurellidae
It was reranked as Clypidina (Montfortula) by Pacaud and Le Renard (1995).
It was assigned to Emarginulinae by Knight et al. (1960); to Emarginulidae by Wilson (1993); to Clypidina by Pacaud and Le Renard (1995); and to Archaeogastropoda by Sepkoski (2002).
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.