|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Arcida - Parallelodontidae
It was reranked as Grammatodon (Nordenskjoldia) by Gliozzi and Malatesta (1983).
It was assigned to Grammatodontinae by Vokes (1980); to Grammatodon by Gliozzi and Malatesta (1983); and to Arcoida 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.