FOSSILS SPECIMEN: BIVALVIA

Fossils are defined as any evidence of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung).

Kingdom: Animalia – Phylum: Mollusca – Class: Bivalvia “two valves or shells”

(clams and oysters)

Lower Cambrian to Holocene

Bivalve Carolinpectin eboreus 

Pectinidae (Scallops)

Tertiary-Pliocene-Piacenzian Tamiami FM-Pinecrest Member Florida

Bivalve Pectin Neithia

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve (Pelecypod)

Pectin

Cretaceous

Grayson Marl Formation Rayzor Ranch Denton Texas

Bivalve Matrix

Cretaceous

Wyoming, North America

Bivalve Lima

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve

Cretacous

North America

Bivalve Pectin

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Inoceramus Shell Fragment

Cretaceous

West, Texas

Bivalve Peilinia crenulimargo

Lower Cretaceous

Kerrville, Texas

Bivalve Exogyra ponderosa

Cretaceous

Texas

Bivalve Texigryphaea

Lower Cretaceous

Texas

Bivalve Texigryphaea

Lower Cretaceous

The Waco Pit, Waco, Texas

Bivalve Gryphaea

Jurassic

Bivalve Gryphaea “Devil’s Toenail”

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Ceratostreon texanum

(formerly Exogyra texana)

Lower Cretaceous

Kerrville, Texas

Bivalve Rastellum (Arcotrea) Carinatum Lamarck

Cretaceous

Denton Clays McLennon County, Texas, United States

Bivalve

Rastellum (Lateral View)

Cretaceous

Texas, United States

Bivalve

Rastellum (Dorsal View)

Cretaceous

Texas, United States

Bivalve Ilymatogyra arietina (Ram’s Horn Oyster)

Cretaceous

Buda, Formation, Comstock, Texas

Bivalve (Oyster)

Ostrea falcata 

Cretaceous

United States

Bivalve Fossil Oyster

Cenozoic

North America

Bivalve

Gyrostea

Cretaceous

Texas, United States

Bivalve

Gyrostea

Cretaceous

Texas, United States

Bivalve

Gyrostea

Cretaceous

Texas, United States

Bivalve Oysters 

Lopha bellaplicata bellaplicata

Post Oak Creek south of Sherman Texas United States

Bivalve Oysters in Matrix

Lopha bellaplicata bellaplicata 

Post Oak Creek south of Sherman Texas United States

Bivalve Oysters 

Lopha bellaplicata bellaplicata

Post Oak Creek south of Sherman Texas United States

Bivalve Protocardia texana

Cretaceous

Texas

Bivalve Artica (internal cast)

Lower Cretaceous

Kerrville, Texas

Bivalve Anoma (internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Nucula (internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Cyprimeria texana internal cast

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Artica (internal cast)

Lower Cretaceous

Kerrville County, Texas

Bivalve Protocardia (internal cast)

Lower Cretaceous

Kerrville, Texas

Bivalve Leptosolen (internal cast)

Lower Cretaceous

Fort Worth, Tarrant County, Texas

Bivalve Paleyoldia

Pennsylvanian

Jacksboro, Jack County, Texas

Bivalve Hippuritoida (Rudist Clams)

Core Natural Cast

Lower Cretaceous

Kerrville, Texas

Bivalve Trigonia

Lower Cretaceous

Kerrville, Texas

Bivalve Exogyra tigris

Cretaceous

Texas

Bivalve Paleyoldia

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Bivalve Palaeoneilo oweni

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Bivalve Crurithyris planoconvexa

Pennsylvanian

(Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Bivalve Astartella varica

Pennsylvanian (Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Bivalve Myalina

Pennsylvanian (Upper Carboniferous)

Finis Shale, Graham Formation, Jacksboro, Jack County, Texas

Bivalve Astartella varica

Pennsylvanian (Upper Carboniferous)

west Mineral Wells roadcut Palo Pinto County, Texas

Bivalve Barbatia uxorispalmeri

Eocene

Stone City Formation, Bryan, Texas

Bivalve Venericardia rotunda

Eocene

Stone City Formation, Bryan, Texas

Bivalve Anomia ephippioides

Eocene

Stone City Formation, Bryan, Texas

Bivalve Caryocorbula deusseni

Eocene

Stone City Formation, Bryan, Texas

Bivalve Pteropsella lapidosa

Eocene

Stone City Formation, Bryan, Texas

Bivalve Notocorbula texana

Eocene

Stone City Formation, Bryan, Texas

Bivalve Lopha (Ostreoidea)

Cretaceous

Texas

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