Locality: Tendaguru, East Africa.

Horizon: Upper Tendaguru Formation.

Biostratigraphy:

Age: Late Jurassic.

Material:

Number: Not given: Gastrolith.

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HARES, 1917

Locality: Base of Pryor Mountains, northeast poriton of the Bighorn Basin, Montana.

Horizon: Cloverly Formation.

Biostratigraphy:

Age: Cashenranchian, Aptian-Albian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Large quantities of gastroliths.

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LIGGETT, 2005

Locality: Two sites, sec. 19, T7S, R2E and "over 6 miles south and 2.5 miles northwest of that locailty, Clay County, Kansas.

Horizon: Dakota Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Gastroliths.
Note: Now lost.

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LOMAX & TAMURA, 2014

Locality: Grange Chine, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

MIWG.6251: Large gastrolith.

Locality: Brighstone Bay, Isle of Wight County, England, Southern United Kindgom.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material:

IWCMS.2010.20: Pes, fragmentary skeleton and gastroliths.

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MARTILL & NAISH, 2001

Locality: Between Barnes High and Grange Chine, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch- Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

UOP/2000/06: A quartzite pebble.

Locality: Brook Bay, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch- Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

UOP/2000/05: Quartzite pebble with adherent pyrite.

 

 

Locality: Hypsilophodon bed, about 100 meters west of Cowleaze Chine and rises in the cliff to end about 2/3 miles further west just beyond Barnes High, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch- Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

UOP/99/1: Steinkern fragment of a Late Jurassic ammonite cf. Ringsteadia sp.

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WEEMS, CULP & WINGS, 2007

Locality: Bull Run Formation exolith Locality 1, in a wooded area with shallow excavation pits, 0.7 mile NWW of Kings Crossroads, Prince William County, Virginia.

Horizon: Near top of the Groveton Member, Bull Run Formation.

Biostratigraphy:

Age: Norian Stage, Late Triassic Epoch, Late Triassic.

Material:

30 stones.

Locality: Bull Run Formation exolith Locality 2, in a plowed field, 0.7 mile SE of Arcola, Loudoun County, Virgina.

Horizon: Near the middle of Groveton Member, Bull Run Formation.

Biostratigraphy:

Age: Norian Stage, Late Triassic Epoch, Late Triassic.

Material:

10 stones.

 

Locality: Bull Run Formation exolith Locality 3, in a plowed field, 0.65 mile NNE of the northwest end of the east-west Dulles Airport runway, Loudoun County, Virginia.

Horizon: Near base of the Groveton Member, Bull Run Formation.

Biostratigraphy:

Age: Norian Stage, Late Triassic Epoch, Late Triassic.

Material:

6 stones.

 

Locality: Bull Run Formation exolith Locality 4, found along the east road bank of VA Route 28, south of US Route 50 and north of Willard Road, Fairfac County, Virgina.

Horizon: Near the top of th eBalls Bluff Siltstone Member, Bull Run Formation.

Biostratigraphy:

Age: Norian Stage, Late Triassic Epoch, Late Triassic.

Material:

USNM 521339: 192 stones.

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YOUNG, 1991

Locality: Young Locality (MWC-122.1), Wells Gulch in the SW 1/4 Sec. 26, T14S, R98W, 6th P.M., Delta County, Colorado.

Horizon: Salt Wash Member, Morrison Formation.

Biostratigraphy: Zone 2.

Age: Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material:

Number: Not given: Small gastroliths.