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Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon

Coles County, Illinois
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Next site in IllinoisCharleston · 11 mi

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Based on our latest records, with claims updated from the BLM on Oct 3, 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 Illinois
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About Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon

Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon is a fossil collection site in Coles, Illinois, cataloged in the Paleobiology Database. Fossils here come from the Grand Tower Limestone, dated to the Middle Devonian (393.47–382.31 million years ago). The depositional environment is recorded as marine indet. Documented finds include Tropidodiscus compticarinatus, Serpulospira diversiformis, Serpulospira, Mourlonia, Bembexia gradilispira, Nodonema granulatum.

Geologic setting

Formation
Grand Tower Limestone
Geologic interval
Middle Devonian
Age
393.47–382.31 Ma
Depositional environment
marine indet.
Altitude
696 feet
Recorded occurrences
26
Locality notes

well was drilled "100.6m south of the north line and 100.6 m east of the west line of the NE1/4 sec. 11, T12N, R7E and was numbered 1032 for the county."

Fossils found here

Tropidodiscus compticarinatus
Gastropoda · Tropidodiscidae
Serpulospira diversiformis
Gastropoda · NO_FAMILY_SPECIFIED
Serpulospira
Gastropoda · NO_FAMILY_SPECIFIED
Mourlonia
Gastropoda · Gosseletinidae
Bembexia gradilispira
Gastropoda · Eotomariidae
Nodonema granulatum
Gastropoda · Portlockiellidae
Bicarina petilitornata
Gastropoda · Gosseletinidae
Euryzone latitornata
Gastropoda · Gosseletinidae
Asinomphalus antiqua
Gastropoda · Tychobraheidae
Petrochus conica
Gastropoda · Pseudophoridae
Petrochus mellaria
Gastropoda · Pseudophoridae
Elasmonema corrugata
Gastropoda · Elasmonematidae
Naticopsis planifrons
Gastropoda · Naticopsidae
Naticopsis (Naticopsis)
Gastropoda · Naticopsidae
Murchisonia akidota
Gastropoda · Murchisoniidae
Murchisonia anderdoniae
Gastropoda · Murchisoniidae
Murchisonia sibleyensis
Gastropoda · Murchisoniidae
Leptodesma
Bivalvia · Pterineidae
Nuculoidea
Bivalvia · Nuculidae
Mulceodens sibleyense
Rostroconchia · Bransoniidae
Kozlowskiella
Ostracoda · Aparchitellinidae
Phlyctiscapha
Ostracoda · Beyrichiidae
Welleriella
Ostracoda · Welleriellidae
Kloedenella
Ostracoda · Kloedenellidae
Cytherellina
Ostracoda · Healdiidae

Records and references

Data: Paleobiology Database collection 24285 (CC BY 4.0) — view the source record

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Questions about Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon

Can you collect at Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon?

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 Drilling on the Herkimer farm, 2.41 km northwest of the center of Mattoon?

Fossil.

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Source: Paleobiology Database.