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Kerr Butte (UCMP V75196)

Garfield County County, Montana
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Next site in MontanaHarmonica Hollow · 8 mi

Can I collect here?

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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.

8 miHarmonica HollowFossil8 miWild Horse BasinFossil10 miMOR locality HC-557Fossil

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About Kerr Butte (UCMP V75196)

Kerr Butte (UCMP V75196) is a fossil collection site in Garfield County, Montana, cataloged in the Paleobiology Database. Fossils here come from the Fort Union Formation, dated to the Puercan (66–63.4 million years ago). The depositional environment is recorded as channel. Documented finds include Eoconodon hutchisoni, Puercolestes simpsoni.

Geologic setting

Formation
Fort Union
Geologic interval
Puercan
Age
66–63.4 Ma
Depositional environment
"channel"
Recorded occurrences
2
Geology notes

"at the base of a 20+ ft (6.1+ m) well-indurated channel sandstone."

Locality notes

"Approximately 3 mi (4.8 km) southeast of the Flat Creek area"

Fossils found here

Eoconodon hutchisoni
Mammalia · Triisodontidae
Puercolestes simpsoni
Mammalia · Cimolestidae

Records and references

Data: Paleobiology Database collection 140079 (CC BY 4.0) — view the source record

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Questions about Kerr Butte (UCMP V75196)

Can you collect at Kerr Butte (UCMP V75196)?

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 Kerr Butte (UCMP V75196)?

Fossil.

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Source: Paleobiology Database.