One Mile Above the Mouth of Dog Creek (Cretaceous of the United States)

Where: Fergus County, Montana (47.7° N, 109.6° W: paleocoordinates 54.8° N, 75.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Claggett Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• "from a [single] fossiliferous band"

•no exact age given, but formation underlies the Campanian Judith River in this area, and other Claggett collections are Campanian

• group of beds-level stratigraphic resolution

Environment/lithology: marine; yellow sandstone

• "marine"
• "from the upper yellowish sandstone"

Size class: macrofossils

Collected by T. W. Stanton in 1914; reposited in the USNM

Primary reference: R. W. Shufeldt. 1915. The fossil remains of a species of Hesperornis found in Montana. Auk 32(3):290-294 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85283: authorized by John Alroy, entered by John Alroy on 09.12.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• "numerous sharks' teeth, vertebrae and teeth of other fishes" are present
Show authors, comments, and common names
Aves
 Hesperornithiformes - Hesperornithidae
"Hesperornis montana n. sp." = Hesperornis montanus
"Hesperornis montana n. sp." = Hesperornis montanus Shufeldt 1915 bird