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Ostreida Order

Class: Bivalvia-Oysters

Gryph: Exogyrinae

Ceratostreon texana

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

Ceratostreon texana

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

Ceratostreon texana

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

Ceratostreon texana

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

Exogyra Ponderosa

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

Exogyra arietina

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

Exogyra laeviuscula

Formation: Austin Chalk
Travis County | 75
Exogyra laeviuscula - Travis County

Exogyra plexa ?

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

Exogyra tigrina

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

Gryph: Pycnodonteinae

Pycnodonte Sp.

Formation: Austin Chalk
Williamson County | W1-683
Pycnodonte Sp. - None

Pycnodonte aucella

Formation: Austin Chalk
Williamson County | 3
Pycnodonte aucella - Hutto

Pycnodonte mutabilis ?

Formation: Other
zUnknown County | 945
Pycnodonte mutabilis ? - None

Pycnodonte sp

Formation: Austin Chalk
Williamson County | W1-494
Pycnodonte sp - Round Rock, TX

Pycnodonte sp.

Formation: Austin Chalk
Williamson County | W1-493
Pycnodonte sp. - Round Rock, TX

Pycnodonte sp.

Formation: Austin Chalk
Travis County | 946
Pycnodonte sp. - None

Pycnodonte wardi

Formation: Glen Rose
Bandera County | B2-944
Pycnodonte wardi - None

Texigryphaea mucronata

Formation: Comanche Peak
Coryell County | 939
Texigryphaea mucronata - None

Texigryphaea mucronata

Formation: Comanche Peak
Bell County | BL1-940
Texigryphaea mucronata - None

Texigryphaea roemeri

Formation: Buda
Williamson County | W2-943
Texigryphaea roemeri - None

Texigryphaea roemeri?

Formation: Del Rio
Travis County | T2-69
Texigryphaea roemeri? - Shoal Creek

Texigryphaea sp.

Formation: Fort Terrett
Kerr County | K1-941
Texigryphaea sp. - None

Ostreidae

Lopha bellaplicata

Formation: Eagle Ford/Atco
Grayson County | PO-666
Lopha bellaplicata - None

Lopha sp.

Formation: Fort Terrett
Kerr County | K1-938
Lopha sp. - None

Ostrea plumosa?

Formation: Austin Chalk
Williamson County | W1-676
Ostrea plumosa? - None

Ostrea sp.

Formation: Austin Chalk
Travis County | 585
Ostrea sp. - None

Ostrea sp.

Formation: Glen Rose
Kerr County | K5-942
Ostrea sp. - None

Peilinia crenulimargo ?

Formation: Walnut
Bell County | BL1-937
Peilinia crenulimargo ? - None

Pseudoperna congesta

Formation: Eagle Ford/Atco
Grayson County | PO-669
Pseudoperna congesta - None

Pseudoperna congesta

Formation: Other
Williamson County | W2-773
Pseudoperna congesta - None