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Green River (USNM Collection)

Colorado
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Next site in ColoradoRoan Mountain · 1 mi

Can I collect here?

Pro
See who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
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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 Colorado
1 miRoan MountainFossil1 miStation 25, Kimball CreekFossil21 miForked Gulch, Green RiverFossil

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About Green River (USNM Collection)

Green River (USNM Collection) is a fossil collection site in Colorado, cataloged in the Paleobiology Database. Fossils here come from the Green River Formation, dated to the Bridgerian (51.1–45.9 million years ago). The depositional environment is recorded as lacustrine - large and the tectonic setting is intermontane basin. Documented finds include Archiinocellia protomaculata, Oreodysagrion tenebris.

Geologic setting

Formation
Green River
Geologic interval
Bridgerian
Age
51.1–45.9 Ma
Depositional environment
lacustrine - large
Tectonic setting
intermontane basin
Recorded occurrences
2
Locality notes

Only details are "Green River, northwestern Colorado" for the holotype. Paratypes may or may not be from same location.

Fossils found here

Archiinocellia protomaculata
Insecta · Raphidiidae
Oreodysagrion tenebris
Insecta · Eodysagrionidae

Records and references

Data: Paleobiology Database collection 132370 (CC BY 4.0) — view the source record

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Questions about Green River (USNM Collection)

Can you collect at Green River (USNM Collection)?

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 Green River (USNM Collection)?

Fossil.

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Source: Paleobiology Database.