†family Laevitrigoniidae Saveliev 1958 (clam)
Bivalvia - Trigoniida - Myophorelloidae
Parent taxon: Myophorelloidae according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Buchotrigoniidae, Myophorellidae
Subtaxa: Frenguelliellinae Laevitrigoniinae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous of Antarctica (10 collections), Argentina (1), India (2), New Zealand (1), Peru (1), Spain (1)
• Jurassic of Argentina (24), Canada (16: British Columbia, Yukon, Yukon Territory), Chile (21), India (4), Madagascar (1), Mexico (6), New Zealand (1), Somalia (1), Tanzania (7), the United Kingdom (3), United States (2: Nevada, Oregon)
• Triassic of United States (8: Nevada, Oregon)
Total: 110 collections including 120 occurrences