|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Pectinida - Placunidae
It was Placenta (Ephippium) by Oostingh (1935); it was reranked as Ephippium by Vokes (1980) and Kosnik (2002).
It was assigned to Placenta by Oostingh (1935); to Placuna by Lamprell and Whitehead (1992); and to Anomiidae by Vokes (1980) and Kosnik (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.