Great Falls (Cretaceous of the United States)

Also known as Great Falls coal field, Cascade County, Montana (Kootenai Formation)

Where: Montana (47.5° N, 111.3° W: paleocoordinates 47.3° N, 65.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Kootenai Formation, Cretaceous (145.0 - 66.0 Ma)

Environment/lithology: mire or swamp; coal

Size class: microfossils

Preservation: coalified, original sporopollenin

Collection methods: surface (in situ), chemical,

• Collected by Dr. Louis Hall of Ann Arbor, then given to Professor H. H. Bartlett, who turned it over to Miner.

Primary reference: E. L. Miner. 1935. Paleobotanical Examinations of Cretaceous and Tertiary Coals: II. Cretaceous and Tertiary Coals from Montana. The American Midland Naturalist 16(4):616-625 [R. Lupia/T. Naeher/T. Naeher]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 32518: authorized by Rick Lupia, entered by Tiffany Naeher on 08.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• The plant remains from the Cascade coal consisted mostly of cuticles and a few spores. The Carbon County sample contained some very interesting and characteristic megaspores, a few pieces of fairly well preserved charcoal, and some cuticles. The plant remains in the Cascade coal appeared to have undergone more distintegration than those in the other sample.
Show authors, comments, and common names
unclassified
  -
Sporonites montanensis n. sp.
Sporonites montanensis n. sp.
cotype for sp.
Pteridopsida
  -
Deltoidospora cascadensis n. sp., Deltoidospora hallii n. sp.
Deltoidospora cascadensis n. sp.
cotype for sp.; no type for genus chosen
Deltoidospora hallii n. sp. Miner 1935
cotype for sp.; no type for genus chosen