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USGS 14583

Johnson County, Texas
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Next site in TexasMidlothian 2 · 11 mi

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Based on our latest records, with claims updated from the BLM on Oct 3, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

11 miMidlothian 2Fossil12 miGeneral AreaFossilized Shark Teeth13 miMidlothianFossil

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About USGS 14583

USGS 14583 is a fossil collection site in Johnson, 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, Exogyra columbella, Cunningtoniceras johnsonanum, Tarrantoceras sellardsi, Cunningtoniceras lonsdalei, Acanthoceras amphibolum.

Geologic setting

Formation
Eagle Ford
Geologic interval
Cenomanian
Age
100.5–93.9 Ma
Depositional environment
marine indet.
Tectonic setting
cratonic basin
Recorded occurrences
7
Geology notes

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

Locality notes

2.5 mi NNE of Alvarado, TX.

Fossils found here

Inoceramus arvanus
Bivalvia · Inoceramidae
Exogyra columbella
Bivalvia · Gryphaeidae
Cunningtoniceras johnsonanum
Cephalopoda · Acanthoceratidae
Tarrantoceras sellardsi
Cephalopoda · Acanthoceratidae
Cunningtoniceras lonsdalei
Cephalopoda · Acanthoceratidae
Acanthoceras amphibolum
Cephalopoda · Acanthoceratidae

Records and references

Data: Paleobiology Database collection 2125 (CC BY 4.0) — view the source record

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Questions about USGS 14583

Can you collect at USGS 14583?

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 14583?

Fossil.

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Meteorite nearbyA 17.8 kg stony meteorite was found at Duncanville in 1961, 25 miles from here.

Source: Paleobiology Database.