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USGS 11740

Tarrant County, Texas
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Next site in TexasUSGS 22320, Mary's Creek [Goodland Limestone] · 2 mi

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Based on our latest records, with claims updated from the BLM on Oct 9, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

2 miUSGS 22320, Mary's Creek [Goodland Limestone]Fossil5 miAsteroidea, Reid locality 9, Dirks, Pawpaw fm, Fort WorthFossil6 mi4 mi SW of Fort Worth, 1/2 mi S of Baptist SeminaryFossil

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About USGS 11740

USGS 11740 is a fossil collection site in Tarrant, Texas, cataloged in the Paleobiology Database. Fossils here come from the Eagle Ford Formation, dated to the Cenomanian (100.5–93.9 million years ago). The depositional environment is recorded as marine indet and the tectonic setting is cratonic basin. Documented finds include Inoceramus arvanus, Ostrea, Brevicardium, Caestocorbula, Cadulus, Pseudomelania.

Geologic setting

Formation
Eagle Ford
Geologic interval
Cenomanian
Age
100.5–93.9 Ma
Depositional environment
marine indet.
Tectonic setting
cratonic basin
Recorded occurrences
15
Geology notes

Sandstone, thin and platy, interbedded with shale; lrg. ovate concretionary fine grained calcareous sandstone (fossiliferous), 1 ft thick, showing effects of crushing by pressure from above.

Locality notes

On Walnut Creek ~4.75 mi. ENE of Mansfield, TX.

Fossils found here

Inoceramus arvanus
Bivalvia · Inoceramidae
Ostrea
Bivalvia · Ostreidae
Brevicardium
Bivalvia · Cardiidae
Caestocorbula
Bivalvia · Corbulidae
Cadulus
Scaphopoda · Gadilidae
Pseudomelania
Gastropoda · Pseudomelaniidae
Lispodesthes
Gastropoda · Aporrhaidae
Cylichna
Gastropoda · Cylichnidae
Desmoceratidae
Cephalopoda · Desmoceratidae
Tarrantoceras sellardsi
Cephalopoda · Acanthoceratidae
Cunningtoniceras lonsdalei
Cephalopoda · Acanthoceratidae
Acanthoceras amphibolum
Cephalopoda · Acanthoceratidae
Borissiakoceras orbiculatum
Cephalopoda · Binneyitidae

Records and references

Data: Paleobiology Database collection 2120 (CC BY 4.0) — view the source record

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Questions about USGS 11740

Can you collect at USGS 11740?

It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.

What minerals are found at USGS 11740?

Fossil.

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Meteorite nearbyA 44.5 kg iron meteorite was found at Saginaw in 1979, 14 miles from here.

Source: Paleobiology Database.