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Gryph: Exogyrinae Family Fossils

Class: Bivalvia-Oysters
Order: Ostreida
Family: Gryph: Exogyrinae
Common: Exogyra

Genus List: Ceratostreon, Exogyra
Formation List: Austin Chalk, Comanche Peak, Del Rio, Fort Terrett
Age List: Albian, Cenomanian, Santonian Coniacian

Ceratostreon texana

Formation: Fort Terrett
Kerr County | K1-947
Age: Albian
Ceratostreon texana - None

Ceratostreon texana

Formation: Comanche Peak
Bell County | BL1-948
Age: Albian
Ceratostreon texana - None

Ceratostreon texana

Formation: Fort Terrett
Kerr County | K1-949
Age: Albian
Ceratostreon texana - None

Ceratostreon texana

Formation: Fort Terrett
Kerr County | K1-14
Age: Albian
Ceratostreon texana - Hunt

Exogyra Ponderosa

Formation: Austin Chalk
Travis County | T3-2
Age: Santonian Coniacian
Exogyra Ponderosa - Pflugerville

Exogyra arietina

Formation: Del Rio
Travis County | T2-13
Age: Cenomanian
Exogyra arietina - Travis County

Exogyra laeviuscula

Formation: Austin Chalk
Travis County | 75
Age: Santonian Coniacian
Exogyra laeviuscula - Travis County

Exogyra plexa ?

Formation: Del Rio
Edwards County | 72
Age: Cenomanian
Exogyra plexa ? - Edwards County

Exogyra tigrina

Formation: Austin Chalk
Travis County | 36
Age: Santonian Coniacian
Exogyra tigrina - Little Walnut Creek

Resources

Cretaceous Atlas Link

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