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Round Rock 1 (UCMP A271)

Apache County, Arizona
Directions
Next site in ArizonaPlacerias Quarry, UCMP A269 · 8 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 Arizona
8 miPlacerias Quarry, UCMP A269Fossil14 miUCMP V4924, Hunt 2 quarryFossil16 miKrzyzanowski Bonebed, NMMNH L-3764Fossil

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About Round Rock 1 (UCMP A271)

Round Rock 1 (UCMP A271) is a fossil collection site in Apache, Arizona, cataloged in the Paleobiology Database. Fossils here come from the Chinle Formation, dated to the Norian (227.3–205.7 million years ago). The depositional environment is recorded as terrestrial indet. Documented finds include Anaschisma browni, Mystriosuchini.

Geologic setting

Formation
Chinle
Geologic interval
Norian
Age
227.3–205.7 Ma
Depositional environment
terrestrial indet.
Recorded occurrences
2
Locality notes

13 to 15 km southwest of Round Rock Trading Post

Fossils found here

Anaschisma browni
Amphibia · Metoposauridae
Mystriosuchini
Reptilia · Parasuchidae

Records and references

Data: Paleobiology Database collection 93473 (CC BY 4.0) — view the source record

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Questions about Round Rock 1 (UCMP A271)

Can you collect at Round Rock 1 (UCMP A271)?

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 Round Rock 1 (UCMP A271)?

Fossil.

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Source: Paleobiology Database.