Kingdom Animalia Phylum Mollusca Order Limoida | Family Limidae Rank Genus Subclass Pteriomorphia | |
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Similar Ctenostreon, Pholadomya, Gryphaea, Limidae, Protocardia | ||
Plagiostoma is a genus of fossil saltwater clams, marine bivalve mollusks in the family Limidae, the file clams.
Contents
Distribution
This cosmopolitan genus occurs in Mid Triassic to Upper Cretaceous strata (from 295.0 to 66.043 Ma.)
Description
These bivalves are epifaunal byssate suspension feeders of up to 12 cm in size. The shells are obliquely ovate, moderately inflated, with obtuse posterior and smaller anterior wings.
Plagiostoma giganteum is a well-known fossil bivalve which occurs in the Blue Lias formation in various parts of the United Kingdom, although it is geographically widespread and has also been found in the Triassic of the United Kingdom.
References
Plagiostoma (bivalve) Wikipedia(Text) CC BY-SA