Highway 15, 1.6 km north of border (uppermost Graneros) is a fossil collection site in Jefferson, Nebraska, cataloged in the Paleobiology Database. Fossils here come from the Graneros Shale, dated to the Middle Cenomanian (100.5–93.9 million years ago). The depositional environment is recorded as offshore. Documented finds include Meristodonoides, Chiloscyllium greeni, Cretorectolobus, Cretalamna appendiculata, Haimirichia amonensis, Microcarcharias saskatchewanensis.

Geologic setting

Formation: Graneros Shale
Geologic interval: Middle Cenomanian
Age: 100.5–93.9 Ma
Depositional environment: offshore
Recorded occurrences: 21

Locality notes

East side of State Highway 15, approximately 1.6 km north of the Kansas-Nebraska border

Fossils found here

Meristodonoides

Chondrichthyes · Hybodontidae

Chiloscyllium greeni

Chondrichthyes · Hemiscylliidae

Cretorectolobus

Chondrichthyes · Orectolobidae

Cretalamna appendiculata

Chondrichthyes · Otodontidae

Haimirichia amonensis

Chondrichthyes · Haimirichiidae

Microcarcharias saskatchewanensis

Chondrichthyes · Odontaspididae

Cenocarcharias tenuiplicatus

Chondrichthyes · Odontaspididae

Eostriatolamia

Chondrichthyes · Odontaspididae

Squalicorax curvatus

Chondrichthyes · Anacoracidae

Pseudohypolophus mcnultyi

Chondrichthyes · NO_FAMILY_SPECIFIED

Ischyrhiza texana

Chondrichthyes · Sclerorhynchidae

Onchopristis dunklei

Chondrichthyes · Sclerorhynchidae

Cretomanta canadensis

Chondrichthyes · Aquilolamnidae

Hadrodus

Osteichthyes · Pycnodontidae

Caturidae

Osteichthyes · Caturidae

Aspidorhynchidae

Osteichthyes · Aspidorhynchidae

Plethodidae

Osteichthyes · Plethodidae

Elopopsis

Osteichthyes · Pachyrhizodontidae

Pachyrhizodus minimus

Osteichthyes · Pachyrhizodontidae

Enchodus gladiolus

Osteichthyes · Enchodontidae

Enchodus shumardi

Osteichthyes · Enchodontidae

Records and references

Data: Paleobiology Database collection 213308 (CC BY 4.0) — view the source record

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Questions about Highway 15, 1.6 km north of border (uppermost Graneros)

Can you collect at Highway 15, 1.6 km north of border (uppermost Graneros)?

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 Highway 15, 1.6 km north of border (uppermost Graneros)?

Fossil.

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Meteorite nearbyA 89.4 kg stony meteorite fell at Farmington in 1890, 20 miles from here.

Source: Paleobiology Database.