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04-BP4-A

Butler County, Ohio
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Next site in Ohio04-LTC-A · 7 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.

7 mi04-LTC-AFossil7 mi04-LPS-AFossil7 mi04-CDE-AFossil

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About 04-BP4-A

04-BP4-A is a fossil collection site in Butler, Ohio, cataloged in the Paleobiology Database. Fossils here come from the Sunset Formation, dated to the Richmondian (449.6–445.5 million years ago). The depositional environment is recorded as deep subtidal ramp and the tectonic setting is cratonic basin. Documented finds include Lingulida, Rafinesquina alternata, Zygospira modesta, Cuffeyella arachnoidea, Bryozoa, Trepostomata.

Geologic setting

Formation
Sunset
Geologic interval
Richmondian
Age
449.6–445.5 Ma
Depositional environment
deep subtidal ramp
Tectonic setting
cratonic basin
Recorded occurrences
10
Locality notes

Roadcuts on both sides of Bypass State Route 4, 0.3 miles south of intersection with Ohio State Route 4 and at overpass of Milliken Road

Fossils found here

Lingulida
Lingulata
Rafinesquina alternata
Strophomenata · Rafinesquinidae
Zygospira modesta
Rhynchonellata · Anazygidae
Cuffeyella arachnoidea
Stenolaemata · NO_FAMILY_SPECIFIED
Bryozoa
Bryozoa
Trepostomata
Stenolaemata
Pterinea demissa
Bivalvia · Pterineidae
Flexicalymene meeki
Trilobita · Calymenidae
Isotelus
Trilobita · Asaphidae
Cincinnaticrinus
Crinoidea · Cincinnaticrinidae

Records and references

Data: Paleobiology Database collection 72933 (CC BY 4.0) — view the source record

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Questions about 04-BP4-A

Can you collect at 04-BP4-A?

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 04-BP4-A?

Fossil.

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What to bring

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Meteorite nearbyA 26.3 kg iron meteorite was found at Dayton in 1892, 30 miles from here.

Source: Paleobiology Database.