Where: Garfield County, Montana (47.3° N, 108.2° W: paleocoordinates 54.4° N, 81.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• 'Laramie deposits'
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Collected by O. Hunter, B. Brown in 1904, 1906; reposited in the AMNH
• Found by Mr. Oscar Hunter in 1904 "and originally 'swapped' for a 'six-shooter' revolver" (Osborn 1909) then puchased in 1906 by Brown.
Primary reference: O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 131865: authorized by Roger Benson, entered by Roger Benson on 31.07.2012, edited by Matthew Carrano and Bethany Allen
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
"Anatosaurus sp." = Edmontosaurus2
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Champsosaurus laramiensis n. sp.1 Brown 1905 choristodere AMNH 982 (holotype), nearly complete skull and skeleton
Champsosaurus ambulator n. sp.1 Brown 1905 choristodere AMNH 983 (holotype), skull and nearly complete skeleton
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Plastomenus costatus Cope 1875 turtle AMNH 6131, some portions of a carapace and a plastron. It is not certainly known that the various bones belong to the same individual.
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