Kingdom: Animalia Phylum: Mollusca Class: Bivalvia Subterclass: Palaeoheterodonta Order: Trigoniida Lamarck, 1819 Families See text Synonyms Trigonioida...

Praecardioida Pterioida (pearl oysters, pen shells) Palaeoheterodonta Trigonioida (Neotrigonia is the only extant genus) Unionoida (freshwater mussels)...

P. (2010), Nomenclator of Bivalve Families. Malacologia 52(2): 1-184 Trigonioida Newell, 1965. Retrieved through: World Register of Marine Species on...

Ostreoida Order Pholadomyoida Order Pterioida Order Solemyoida Order Trigonioida Order Unionoida Order Veneroida Class Scaphopoda Order Dentaliida Order...

2019-02-26 Lazo, Darío G (2003), "The genus Steinmanella (Bivalvia, Trigonioida) in the lower member of the Agrio Formation (Lower Cretaceous), Neuquén...