|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Ostreida - Gryphaeidae
It was assigned to Pycnodontinae by Ward (1992); to Pycnodonteinae by Vokes (1980), Woodring (1982), Moore (1987), Freneix et al. (1988) and Perrilliat (1994); to Gryphaeidae by Lamprell and Healy (1998) and Todd (2001); and to Pterioida by Sepkoski (2002).
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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.