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Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County

Palm Beach County, Florida
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Next site in FloridaBlowing Rocks Preserve · 32 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.

32 miBlowing Rocks PreserveCoquina35 miOkaloacoochee Mbr, Fort Thompson Fm - Broward CountyFossil42 miCape FloridaFossil

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About Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County

Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County is a fossil collection site in Palm Beach, Florida, cataloged in the Paleobiology Database. Fossils here come from the Thompson Formation, dated to the Late Pleistocene (0.129–0.0117 million years ago). The depositional environment is recorded as lagoonal/restricted shallow subtidal. Documented finds include Cerithidea beattyi lakeworthensis, Cerithidea scalariformis palmbeachensis, Pyrazisinus ultimus.

Geologic setting

Formation
Thompson
Geologic interval
Late Pleistocene
Age
0.129–0.0117 Ma
Depositional environment
lagoonal/restricted shallow subtidal
Recorded occurrences
3
Geology notes

ENVIRONMENT: "Mangrove islands and extensive turtle grass beds" according to Petuch (2004). Coffee Mill Mbr contains the Chione elevata community (shallow lagoon Thalassia beds) and the Pyrazisinus ultimus community (mangrove forrests and intertidal mud flats). SEQUENCE STRATIGRAPHY: Acculated during interglacial events. Petuch (2004) states "during sea level highstand", though presumably accumulation may have initiated during preceding transgressive events [enterer].

Locality notes

SPECIFIC LOCATION: Composite collection for taxa described from the Coffee Mill Mbr. Exposed at Lake Worth Road, 1.3 km west of the Florida Turnpike, Lake Worth, Palm Beach County, Florida; also at construction dig along US 441 and Forest Hill Boulevard, Wellington, Palm Beach County, Florida. LAT/LONG: estimated based on Palm Beach County, Florida.

Fossils found here

Cerithidea beattyi lakeworthensis
Gastropoda · Potamididae
Cerithidea scalariformis palmbeachensis
Gastropoda · Potamididae
Pyrazisinus ultimus
Gastropoda · Batillariidae

Records and references

Data: Paleobiology Database collection 62458 (CC BY 4.0) — view the source record

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Questions about Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County

Can you collect at Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County?

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 Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County?

Fossil.

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Meteorite nearbyA 1 kg stony meteorite was found at Okechobee in 1916, 22 miles from here.

Source: Paleobiology Database.