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UCMP A3707

Snohomish County, Washington
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Next site in WashingtonGranite Falls · 9 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.

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About UCMP A3707

UCMP A3707 is a fossil collection site in Snohomish, Washington, cataloged in the Paleobiology Database. Fossils here come from the Blakeley Formation, dated to the Chattian (27.3–23.04 million years ago). The depositional environment is recorded as marine indet. Documented finds include Acila (Truncacila) muta, Clinocardium scapoosense, Glycymeris, Lucinoma acutilineata, Macrocallista weaveri, Mactromeris hannibali.

Geologic setting

Formation
Blakeley
Geologic interval
Chattian
Age
27.3–23.04 Ma
Depositional environment
marine indet.
Recorded occurrences
20

Fossils found here

Acila (Truncacila) muta
Bivalvia · Nuculidae
Clinocardium scapoosense
Bivalvia · Cardiidae
Glycymeris
Bivalvia · Hiatellidae
Lucinoma acutilineata
Bivalvia · Lucinidae
Macrocallista weaveri
Bivalvia · Veneridae
Mactromeris hannibali
Bivalvia · Mactridae
Mactromeris ramonensis
Bivalvia · Mactridae
Mytilus
Bivalvia · Mytilidae
Panopea abrupta
Bivalvia · Hiatellidae
Tellina
Bivalvia · Tellinidae
Thracia (Homoeodesma) trapezoides
Bivalvia · Thraciidae
Acrilla (Undiscala) olympicensis
Gastropoda · Epitoniidae
Agasoma acuminatum
Gastropoda · Buccinidae
Calyptraea (Galerus) vancouverensis
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED
Crepidula sookensis
Gastropoda · Calyptraeidae
Ancilla fishii
Gastropoda · Olividae
Molopophorus newcombei
Gastropoda · Nassariidae
Fusinus (Priscofusus) hannibali
Gastropoda · Fasciolariidae
Siphonalia
Gastropoda · Buccinidae
Turritella diversilineata
Gastropoda · Turritellidae

Records and references

Data: Paleobiology Database collection 208172 (CC BY 4.0) — view the source record

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Questions about UCMP A3707

Can you collect at UCMP A3707?

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 UCMP A3707?

Fossil.

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Source: Paleobiology Database.