North of Gladstone (USNM 14083) (Paleogene of the United States)

Where: Stark County, North Dakota (46.9° N, 102.6° W: paleocoordinates 51.3° N, 82.6° 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 and sandstone

• dominantly interchannel siltstone and 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 10969: authorized by Hallie Sims, entered by Summer Ostrowski on 08.07.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
 Coniferales - Cupressaceae
Metasequoia occidentalis
Metasequoia occidentalis Chaney 1951 dawn redwood
Pinopsida
 Pinales - Pinaceae
Pinus peregrinus n. sp.
Pinus peregrinus n. sp. Hickey 1977 pine
Angiospermae
 Sapindales - Sapindaceae
Acer sp.
Acer sp. Linnaeus 1753 maple
 Fagales - Juglandaceae
Pterocarya hispida
Pterocarya hispida Brown 1962 wingnut
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum genetrix
Cercidiphyllum genetrix Newberry 1868 katsura
 Ranunculales - Menispermaceae
"Cocculus" flabella, Menispermites parvareolatus n. sp.
Menispermites parvareolatus n. sp. Hickey 1977
 Proteales - Sabiaceae
Meliosma longifolia
Meliosma longifolia Hickey 1977
 Mesangiosperms - Araceae
Porosia verrucosa
Porosia verrucosa Lesquereux 1878