†subfamily Grammatodontinae Branson 1942 (clam)
Bivalvia - Arcida - Parallelodontidae
Parent taxon: Parallelodontidae according to J. G. Carter et al. 2011
Sister taxa: Alytodonta, Cucullaria, Parallelodontinae, Pichleria, Pleurogrammatodon
Subtaxa: Aptolinter, Catella, Catellini, Cryptochasma, Cucullopsis, Gilbertwhitea, Grammatodon, Grammatodontini, Nanonavis, Nemodon, Nemodontini, Nordenskjoeldia, Notogrammatodon, Porterius, Pseudogrammatodon, Pseudomacrodon, Stenocolpus, Torinosucatella
Ecology: facultatively mobile low-level epifaunal suspension feeder