Farmers Butte (USNM 14058) (Paleocene of the United States)

Where: Stark County, North Dakota (46.9° N, 102.1° W: paleocoordinates 51.2° N, 82.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bear Den Member (Golden Valley Formation), Clarkforkian (56.8 - 55.8 Ma)

• On Farmers Butte, 5.6 km to the south , the lower contact of the golden Valley formation is mainly a gradation from somber, montmorillonitic Sentinel Butte strata to kaolinitic shale in the gray zone of the Bear Den Member.

• bed-level stratigraphic resolution

Environment/lithology: "channel"; siltstone and sandstone

• Dominantly interchannel siltstone with some sandstone

Size class: macrofossils

Preservation: adpression

Reposited in the USNM

Collection methods: quarrying,

Primary reference: L. J. Hickey. 1977. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota. The Geological Society of America Memoir 150:1-183 [H. Sims/S. Ostrowski/J. Cassara]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 10809: authorized by Hallie Sims, entered by Summer Ostrowski on 25.06.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Angiospermae
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum genetrix Newberry 1868 katsura