Dumbbell Hill, Silver Tip Gulch (Cretaceous of the United States)

Where: Park County, Wyoming (44.9° N, 108.9° W: paleocoordinates 52.2° N, 83.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lance Formation, Lancian (70.6 - 66.0 Ma)

• "at the base of the Lance Formation in the Little Polecat Anticline, and is located below the Sage Point and the Rock Bench Quarry."

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; massive sandstone

Size classes: macrofossils, mesofossils

Collected by J. Dyer in 1947; reposited in the YPM

Collection methods: bulk, quarrying, surface (in situ),

• orig. discovered by Husky Oil Company prospecting party

Primary reference: P. D. Gingerich, K. D. Rose, and D. W. Krause. 1980. Early Cenozoic mammalian faunas of the Clark's Fork Basin-Polecat Bench area, northwestern Wyoming. University of Michigan Papers on Paleontology 24:51-68 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14526: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• same as list of Clemens et al. 1979
Osteichthyes
 Osteichthyes -
Osteichthyes indet.2 Huxley 1880 bony fish
"numerous fish scales"
Reptilia
 Squamata -
 Theropoda - Tyrannosauridae
Tyrannosaurus rex2 Osborn 1905 tyrant lizard king
YPM VPPU 016516
Mammalia
 Theriamorpha - Alphadontidae
Alphadon cf. marshi Simpson 1927 metatherian
 Multituberculata -
Cimolodonta indet.1 multituberculate
 Multituberculata - Cimolomyidae
Cimolomys gracilis Marsh 1889 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889 multituberculate
 Multituberculata - Neoplagiaulacidae
Mesodma formosa Marsh 1889 multituberculate