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MNA Loc. 271: BM 10

Coconino County, Arizona
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Next site in ArizonaMNA Loc. 324: BM 10 · 4 mi

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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
4 miMNA Loc. 324: BM 10Fossil13 miMNA Loc. 814: BM 10Fossil16 miMNA Loc. 305: BM 12Fossil

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About MNA Loc. 271: BM 10

MNA Loc. 271: BM 10 is a fossil collection site in Coconino, Arizona, cataloged in the Paleobiology Database. Fossils here come from the Mancos Shale, dated to the Late Cenomanian (100.5–93.9 million years ago). The depositional environment is recorded as basinal (siliciclastic) and the tectonic setting is foreland basin. Documented finds include Cadulus, Charonia, Dolicholatirus, Drepanochilus, Inoceramus (Inoceramus) pictus, Lucina subundata.

Geologic setting

Formation
Mancos Shale
Geologic interval
Late Cenomanian
Age
100.5–93.9 Ma
Depositional environment
basinal (siliciclastic)
Tectonic setting
foreland basin
Recorded occurrences
13

Fossils found here

Cadulus
Scaphopoda · Gadilidae
Charonia
Gastropoda · Ranellidae
Dolicholatirus
Gastropoda · Dolicholatiridae
Drepanochilus
Gastropoda · Aporrhaidae
Inoceramus (Inoceramus) pictus
Bivalvia · Inoceramidae
Lucina subundata
Bivalvia · Lucinidae
Metaptychoceras
Cephalopoda · Hamitidae
Metoicoceras geslinianum
Cephalopoda · Acanthoceratidae
Modiolus
Bivalvia · Mytilidae
Nannometoicoceras acceleratum
Cephalopoda · Acanthoceratidae
Pyropsis
Gastropoda · Pyropsidae
Terebrimya
Bivalvia · Teredinidae

Records and references

Data: Paleobiology Database collection 53401 (CC BY 4.0) — view the source record

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Questions about MNA Loc. 271: BM 10

Can you collect at MNA Loc. 271: BM 10?

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 MNA Loc. 271: BM 10?

Fossil.

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Source: Paleobiology Database.