Also known as Sample #383 (just above the 6-foot lignite), Newberry Hill, near Ekalaka, Carter Co., Montana (Hell Creek Formation)

Where: Carter County, Montana (45.9° N, 104.6° W: paleocoordinates 52.4° N, 77.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• The top of the hill is capped by a massive channel sandstone. Below this is a series of gray clays, siltstones and organic-rich clays, extending to a 6-foot lignite 50 feet below the base of the sandstone. This section continues in the Hell Creek Formation below the lignite to a total of 415 feet, but not to the contact with the underlying Fox Hills Sandstone. The megaspore samples are all from above the lignite, and are all in the Hell Creek Formation on the basis of an analysis of the pollen and spores in progress by Oltz and Hall. (Sample 383 is the source of the megaspores that are described. It is just above the 6-foot lignite.)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; shale

Size class: microfossils

Preservation: original sporopollenin

Collection methods: surface (in situ), chemical,

Primary reference: J. W. Hall and R. D. Bergad. 1971. A critical study of three Cretaceous salviniaceous megaspores. micropaleontology 17(3):345-356 [R. Lupia/T. Naeher/T. Naeher]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34094: authorized by Rick Lupia, entered by Tiffany Naeher on 14.08.2003

Creative Commons license: CC BY (attribution)