†family Frejidae Ratter and Cope 1998 (clam)
Alternative spelling: Frejdidae
Parent taxon: Arcoidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Nevesskaja 2009 and Ratter and Cope 1998
Sister taxa: Arcidae, Catamarcaiidae, Cucullaeidae, Glycymerididae, Noetiidae, Parallelodontidae
Subtaxa: Freja Trecanolia Uskardita
Ecology: facultatively mobile semi-infaunal suspension feeder
Distribution:
• Silurian of Sweden (3 collections), the United Kingdom (2)
Total: 5 collections each including a single occurrence