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MP-111

Wyoming
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Next site in WyomingMP-112 · 0.1 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.

Nearby sites

All of Wyoming
0.1 miMP-112Fossil2 miMP-101Fossil2 miMP-100Fossil

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About MP-111

MP-111 is a fossil collection site in Wyoming, cataloged in the Paleobiology Database. Fossils here come from the Willwood Formation, dated to the Wasatchian (56–51.1 million years ago). The depositional environment is recorded as fluvial-lacustrine indet and the tectonic setting is intermontane basin. Documented finds include Cantius abditus, Cantius frugivorus, Coryphodon, Diacodexis metsiacus, Esthonyx bisulcatus, Hyopsodus lysitensis.

Geologic setting

Formation
Willwood
Geologic interval
Wasatchian
Age
56–51.1 Ma
Depositional environment
fluvial-lacustrine indet.
Tectonic setting
intermontane basin
Recorded occurrences
13
Locality notes

Quad = Sheets Flat, Township = 51N, Range = 99W, Section = 27

Fossils found here

Cantius abditus
Mammalia · Notharctidae
Cantius frugivorus
Mammalia · Notharctidae
Coryphodon
Mammalia · Coryphodontidae
Diacodexis metsiacus
Mammalia · Diacodexeidae
Esthonyx bisulcatus
Mammalia · Esthonychidae
Hyopsodus lysitensis
Mammalia · Hyopsodontidae
Hyopsodus powellianus
Mammalia · Hyopsodontidae
Bunophorus etsagicus
Mammalia · Diacodexeidae
Arenahippus pernix
Mammalia · Equidae
Lepisosteus
Osteichthyes · Lepisosteidae
Rodentia
Mammalia
Testudines
Reptilia
Vulpavus australis
Mammalia · NO_FAMILY_SPECIFIED

Records and references

Data: Paleobiology Database collection 46712 (CC BY 4.0) — view the source record

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Questions about MP-111

Can you collect at MP-111?

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 MP-111?

Fossil.

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Source: Paleobiology Database.