Pterotrigonia

Pterorigonia is an extinct genus of saltwater clams, marine bivalve molluscs in the family Megatrigoniidae. This genus is known in the fossil record from the Jurassic period Tithonian age to the Cretaceous period Maastrichtian age. Species in this genus were facultatively mobile infaunal suspension feeders. The type species of the genus is Pterotrigonia cristata.

Pterotrigonia
Temporal range: from Jurassic to Cretaceous, 164.7–66.043 Ma
Fossil Pterotrigonia caudata (Agassiz 1840) from the Isle of Wight at Galerie de paléontologie et d'anatomie comparée, Paris
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Bivalvia
Order:
Trigoniida
Superfamily:
Megatrigonioidea
Family:
Megatrigoniidae
Subfamily:
Pterotrigoniinae
Genus:
Pterotrigonia

van Hoepen 1929

Pterotrigonia thoracica, was selected as the state fossil of Tennessee in 1998.

Distribution

Fossils of species within this genus have been found in the Jurassic of Antarctica, Chile and India, as well as in the Cretaceous of Angola, Antarctica, Argentina, Austria, Chile, Colombia, Cuba, Ecuador, Egypt, France, Hungary, Italy, Japan, Libya, Madagascar, Mexico, Mozambique, New Zealand, Oman, Peru, Portugal, Serbia and Montenegro, South Africa, Spain, Trinidad and Tobago, Russia, Ukraine, United Arab Emirates, United Kingdom, United States and Yemen.

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References


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