FG-41 is a fossil collection site in Wyoming, cataloged in the Paleobiology Database. Fossils here come from the Fort Union Formation, dated to the Cf2 (57.5–56 million years ago). The depositional environment is recorded as fluvial-lacustrine indet and the tectonic setting is intermontane basin. Documented finds include Crocodylia, Didymictis, Lacertilia, Phenacodaptes, Phenacodus, Dillerlemur pagei.

Geologic setting

Formation: Fort Union
Geologic interval: Cf2
Age: 57.5–56 Ma
Depositional environment: fluvial-lacustrine indet.
Tectonic setting: intermontane basin
Recorded occurrences: 14

Locality notes

Quad = North Emblem Res., Township = 54N, Range = 96W, Section = 1

Fossils found here

Crocodylia

Reptilia

Didymictis

Mammalia · Viverravidae

Lacertilia

Reptilia

Phenacodaptes

Mammalia · Apheliscidae

Phenacodus

Mammalia · Phenacodontidae

Dillerlemur pagei

Mammalia · Paromomyidae

Plesiadapis dubius

Mammalia · Plesiadapidae

Probathyopsis harrisorum

Mammalia · Prodinoceratidae

Testudines

Reptilia

Chriacus

Mammalia · Arctocyonidae

Princetonia yalensis

Mammalia · Arctocyonidae

Apheliscus nitidus

Mammalia · Apheliscidae

Phenacodus intermedius

Mammalia · Phenacodontidae

Ectocion osbornianus

Mammalia · Phenacodontidae

Records and references

Data: Paleobiology Database collection 46651 (CC BY 4.0) — view the source record

Getting there

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Questions about FG-41

Can you collect at FG-41?

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 FG-41?

Fossil.

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What to bring

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Source: Paleobiology Database.