Also known as MPM 2256
Where: McCone County, Montana (47.8° N, 106.1° W: paleocoordinates 54.4° N, 79.0° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• approx 35 m below base of "Z coal", high in Hell Creek Formation
• bed-level stratigraphic resolution
Environment/lithology: crevasse splay; gray, yellow, argillaceous, sandy conglomerate
Size classes: macrofossils, mesofossils
Collected by C. West in 1977–1978
Collection methods: surface (float), surface (in situ), mechanical,
Primary reference: C. Lupton, D. Gabriel, and R. M. West. 1980. Paleobiology and depositional setting of a Late Cretaceous vertebrate locality, Hell Creek Formation, McCone County, Montana. Contributions to Geology, University of Wyoming 18(2):117-126 [J. Alroy/J. Alroy/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 14674: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Chondrichthyes | |
Lonchidion selachos Estes 1964 elasmobranch | |
Myledaphus bipartitus Cope 1876 guitarfish | |
Actinopteri | |
Amia fragosa Jordan 1927 bowfin | |
Lepisosteus sp. Agassiz 1843 gar | |
Amphibia | |
| |
Reptilia | |
| |
Dromaeosauridae indet. Colbert and Russell 1969 maniraptoran | |
"Tyrannosaurus rex" = Tyrannosaurus rex, "cf. Gorgosaurus lancensis" = Tyrannosaurus rex
"Tyrannosaurus rex" = Tyrannosaurus rex Osborn 1905 tyrant lizard king
"cf. Gorgosaurus lancensis" = Tyrannosaurus rex Osborn 1905 tyrant lizard king | |
Triceratops prorsus Marsh 1890 ceratopsid | |
"Anatosaurus copei" = Edmontosaurus annectens
| |
Ankylosauria indet. ankylosaur | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Champsosaurus sp. Cope 1876 choristodere | |
| |
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle | |
? Baenidae indet. Cope 1882 turtle | |
Mammalia | |
| |
"Catopsalis joyneri" = Valenopsalis joyneri
"Catopsalis joyneri" = Valenopsalis joyneri Sloan and Van Valen 1965 multituberculate |