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Laevitrigonia gibbosa.jpg
An internal mold of Laevitrigonia gibbosa from the Portland Limestone (Upper Jurassic), Isle of Portland, Dorset, England, scale bar is 1 cm
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Trigoniida
Family: Trigoniidae
Subfamily: Laevitrigoniinae
Genus: Laevitrigonia

Laevitrigonia is a genus of fossil clams, marine bivalve mollusks in the family Trigoniidae. This bivalve is sometimes preserved with mineralized soft-tissue.[1]


  1. ^ Wilby, P. R.; Whyte, M. A. (1995). "Phosphatized soft tissues in bivalves from the Portland Roach of Dorset (Upper Jurassic)". Geological Magazine. 132: 117. doi:10.1017/S001675680001147X.