†family Trigonodidae Modell 1942 (clam)
Bivalvia - Trigoniida - Trigonodidae
Alternative spelling: Trigonodoidae
Parent taxon: Trigonodoidea according to A. S. Biakov and R. V. Kutygin 2021
See also Bouchet et al. 2010, Carter et al. 2011, Nevesskaja 2009 and Vokes 1980
Sister taxon: Desertellidae
Subtaxa: Janaija Trigonodus
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Triassic of Bosnia and Herzegovina (2 collections), China (3), Germany (3), Hungary (2), Indonesia (1), Israel (1), Italy (20), Japan (1), Laos (1), Peru (1), the Russian Federation (23), Slovakia (1), Slovenia (21), Thailand (2), United States (13: Alaska, Utah, Wyoming), Vietnam (15)
• Arenig of Australia (2)
Total: 112 collections including 213 occurrences