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Pterotrigonia is an
extinct genus of sal****er clams,
marine bivalve molluscs in the
family Megatrigoniidae. This
genus is
known in the
fossil record...
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Beverage Milk
Dance Square dance Firearm Barrett M82 Food
Tomato Fossil Pterotrigonia (Scabrotrigonia)
thoracica Gemstone Tennessee River pearl Mineral Agate...
- †Pseudocorax †Pteria †
Pterotrigonia †
Pterotrigonia angulicostata †
Pterotrigonia eufalensis †
Pterotrigonia eufaulensis †
Pterotrigonia thoracica †Ptychodus...
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Semnan Province > Bivalvia: Inoperna, Late Jur****ic,
Semnan Province Pterotrigonia, Jur****ic,
North Khorasan Province Trigonia, Jur****ic,
North Khorasan...
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fossils from this
formation is the
gastropod Turritella, the
bivalve Pterotrigonia thoracica (the
state fossil of Tennessee), as well as
other fossils...
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Pleistocene creatures was made near Nashville. The
Cretaceous bivalve Pterotrigonia thoracica is the
Tennessee state fossil.
During the Precambrian, Tennessee...
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Triceratops Triceratops horridus 1988
Tennessee Cretaceous Bivalve Pterotrigonia thoracica 1998 Utah Jur****ic
Allosaurus Allosaurus fragilis 1988 Vermont...
- †Pterophyllum †
Pterotrigonia †
Pterotrigonia bartrami –
tentative report †
Pterotrigonia cerulea †
Pterotrigonia eufalensis †
Pterotrigonia eufaulensis †Pugnellus...
- †Pteria †Pteridophyte †
Pterotrigonia †
Pterotrigonia angulicostata †
Pterotrigonia cerulea †
Pterotrigonia eufalensis †
Pterotrigonia eufaulensis †Ptychodus...
- †Pseudomalaxis
pilsbryi †Pteria †Pterocerella †
Pterotrigonia †
Pterotrigonia cerulea †
Pterotrigonia eufalensis †
Pterotrigonia eufaulensis †Ptychotrygon †Ptychotrygon...
