|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Ostreida
It was considered an invalid subgroup of Pteriomorphia by Giribet and Wheeler (2002); it was corrected as Ostreida by Carter et al. (2011).
It was assigned to Pteriomorphia by Coan et al. (2000), Todd (2001) and Scholz et al. (2008); to Ostreiformii by Carter et al. (2011); and to Eupteriomorphia by Waller (2011).
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.