Rooks County is a fossil collection site in Rooks, Kansas, cataloged in the Paleobiology Database. Fossils here come from the Niobrara Formation, dated to the Late Coniacian to Early Santonian (89.8–83.6 million years ago). The depositional environment is recorded as offshore ramp. Documented finds include Pseudocorax laevis, Platecarpus tympaniticus.

Geologic setting

Formation: Niobrara
Geologic interval: Late Coniacian to Early Santonian
Age: 89.8–83.6 Ma
Depositional environment: offshore ramp
Recorded occurrences: 2

Locality notes

No specific details given other than Rooks County

Fossils found here

Pseudocorax laevis

Chondrichthyes · Pseudocoracidae

Platecarpus tympaniticus

Reptilia · Mosasauridae

Records and references

Data: Paleobiology Database collection 215772 (CC BY 4.0) — view the source record

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Questions about Rooks County

Can you collect at Rooks 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 Rooks County?

Fossil.

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What to bring

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Meteorite nearbyA 11.7 kg iron meteorite was found at Hill City in 1947, 30 miles from here.

Source: Paleobiology Database.