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Vista, Horizon 1

San Diego County, California
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Next site in CaliforniaRancho Carillo #1 · 3 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 Vista, Horizon 1

Vista, Horizon 1 is a fossil collection site in San Diego, California, cataloged in the Paleobiology Database. Fossils here come from the Delmar Formation, dated to the Lutetian (48.07–41.03 million years ago). The depositional environment is recorded as peritidal. Documented finds include Bittium preussi, Gemmula violeta, Potamides carbonicola.

Geologic setting

Formation
Delmar
Geologic interval
Lutetian
Age
48.07–41.03 Ma
Depositional environment
peritidal
Recorded occurrences
3
Locality notes

University of California, Riverside foss locality 4865 is in a roadcut (Text-fig. 1 the southwest side of California State High 78, 5.2 km southeast of Vista and 4.8 km northwest of San Marcos at lat. 33 09' 47" N., long. 117 12' 39" W., in northern San Diego County, California.

Fossils found here

Bittium preussi
Gastropoda · Cerithiidae
Gemmula violeta
Gastropoda · Turridae
Potamides carbonicola
Gastropoda · Potamididae

Records and references

Data: Paleobiology Database collection 200656 (CC BY 4.0) — view the source record

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Questions about Vista, Horizon 1

Can you collect at Vista, Horizon 1?

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 Vista, Horizon 1?

Fossil.

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Source: Paleobiology Database.