Harnisch Butte (USNM 14056b) (Paleogene of the United States)

Where: Morton County, North Dakota (47.0° N, 102.1° W: paleocoordinates 51.3° N, 82.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bear Den Member (Golden Valley Formation), Clarkforkian (56.2 - 54.9 Ma)

• Above Harnisch lignite

• bed-level stratigraphic resolution

Environment/lithology: "channel"; siltstone

• Dominantly interchannel siltstone. Some lignite and shale also

Size class: macrofossils

Preservation: mold/impression, 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: general faunal/floral analysis

PaleoDB collection 10803: authorized by Hallie Sims, entered by Summer Ostrowski on 25.06.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Polypodiopsida
 Equisetales - Equisetidae
Equisetum magnum
Equisetum magnum Hickey 1977 horsetail
 Coniferales - Cupressaceae
Metasequoia occidentalis, Glyptostrobus europaeus
Metasequoia occidentalis Chaney 1951 dawn redwood
Glyptostrobus europaeus Brongniart 1833 Chinese swamp cypress
Angiospermae
 Typhales - Commelinidae
Sparganium parvum n. sp.
Sparganium parvum n. sp. Hickey 1977 bur-reed
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum genetrix
Cercidiphyllum genetrix Newberry 1868 katsura