Heart River Bluffs (USNM 14051) (Paleogene of the United States)

Also known as USGS loc. 8540

Where: Stark County, North Dakota (46.9° N, 102.8° W: paleocoordinates 51.3° N, 82.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: "channel"; siltstone

• Dominantly interchannel siltstone

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 10805: 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
Pinopsida
 Pinales - Pinaceae
Pinus peregrinus
Pinus peregrinus Hickey 1977 pine
Angiospermae
 Sapindales - Sapindaceae
Acer sp.
Acer sp. Linnaeus 1753 maple
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum genetrix
Cercidiphyllum genetrix Newberry 1868 katsura
 Cornales - Cornaceae
Cornus hyperborea
Cornus hyperborea Heer 1871 dogwood
Polypodiopsida
 Equisetales - Equisetidae
Equisetum magnum
Equisetum magnum Hickey 1977 horsetail
Carpolithes
  -
Carpolithes lunatus n. sp.
Carpolithes lunatus n. sp. Hickey 1977
Wardiaphyllum
  -
Wardiaphyllum daturaefolium