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Manis Mastodon Site

Clallam County, Washington
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Next site in WashingtonDungeness · 6 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 Manis Mastodon Site

Manis Mastodon Site is a fossil collection site in Clallam, Washington, cataloged in the Paleobiology Database. The depositional environment is recorded as pond. Documented finds include Mammut americanum, Bison, Rangifer, Pinus, Picea, Abies.

Geologic setting

Geologic interval
Late Pleistocene
Age
0.129–0.0117 Ma
Depositional environment
pond
Altitude
165 meters
Recorded occurrences
68
Geology notes

the "horizon accumulated directly upon till lining a pond some 60 m in diameter; mastodon bones were concentrated near the north shore"

Locality notes

"at 165-elevation in Happy Valley, a gently sloping upland area 3 km south of Sequim, Washington (SE1/4 NE1/4, sec. 31, T. 30 N., R. 3 W...)"

Fossils found here

Mammut americanum
Mammalia · Mammutidae
Bison
Mammalia · Bovidae
Rangifer
Mammalia · Cervidae
Pinus
Pinopsida · Pinaceae
Picea
Pinopsida · Pinaceae
Abies
Pinopsida · Pinaceae
Tsuga mertensiana
Pinopsida · Pinaceae
Tsuga
Pinopsida · Pinaceae
Cupressaceae
NO_CLASS_SPECIFIED · Cupressaceae
Acer
NO_CLASS_SPECIFIED · Sapindaceae
Alnus
NO_CLASS_SPECIFIED · Betulaceae
Betula
NO_CLASS_SPECIFIED · Betulaceae
Salix
NO_CLASS_SPECIFIED · Salicaceae
Quercus
NO_CLASS_SPECIFIED · Fagaceae
Artemisia
NO_CLASS_SPECIFIED · Asteraceae
Ephedra
Ginkgoopsida · Ephedraceae
Plantago
NO_CLASS_SPECIFIED · Plantaginaceae
Poaceae
NO_CLASS_SPECIFIED · Poaceae
Potentilla
NO_CLASS_SPECIFIED · Rosaceae
Ericaceae
Dicotyledoneae · Ericaceae
Berberis
NO_CLASS_SPECIFIED · Berberidaceae
Cornus
NO_CLASS_SPECIFIED · Cornaceae
Ribes
NO_CLASS_SPECIFIED · Grossulariaceae
Thalictrum
NO_CLASS_SPECIFIED · Ranunculaceae
Ranunculus
NO_CLASS_SPECIFIED · Ranunculaceae
Caryophyllaceae
NO_CLASS_SPECIFIED · Caryophyllaceae
Onagraceae
Dicotyledoneae · Onagraceae
Campanulaceae
NO_CLASS_SPECIFIED · Campanulaceae
Pedicularis
NO_CLASS_SPECIFIED · Scrophulariaceae
Polygonum amphibium
NO_CLASS_SPECIFIED · Polygonaceae
Galium
NO_CLASS_SPECIFIED · Rubiaceae
Urticaceae
NO_CLASS_SPECIFIED · Urticaceae
Brassicaceae
NO_CLASS_SPECIFIED · Brassicaceae
Lamiaceae
NO_CLASS_SPECIFIED · Lamiaceae
Cyperaceae
NO_CLASS_SPECIFIED · Cyperaceae
Typha latifolia
NO_CLASS_SPECIFIED · Typhaceae
Hippuris vulgaris
Dicotyledoneae · Haloragidaceae
Potamogeton
NO_CLASS_SPECIFIED · Potamogetonaceae
Myriophyllum spicatum
NO_CLASS_SPECIFIED · Haloragaceae
Liliaceae
NO_CLASS_SPECIFIED · Liliaceae
Menyanthes
NO_CLASS_SPECIFIED · Menyanthaceae
Lemna
NO_CLASS_SPECIFIED · Lemnaceae
Utricularia
NO_CLASS_SPECIFIED · Lentibulariaceae
Equisetum
Polypodiopsida · Equisetaceae
Dryopteris
Polypodiopsida · Dryopteridaceae
Polypodium
Polypodiopsida · Polypodiaceae
Cheilanthes
Polypodiopsida · Pteridaceae
Botrychium
Pteridopsida · Ophioglossaceae

Showing 48 of 61 identified taxa.

Records and references

Data: Paleobiology Database collection 93677 (CC BY 4.0) — view the source record

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Questions about Manis Mastodon Site

Can you collect at Manis Mastodon Site?

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 Manis Mastodon Site?

Fossil.

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Source: Paleobiology Database.