Where: Morton County, North Dakota (46.9° N, 101.5° W: paleocoordinates 52.6° N, 74.4° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Hell Creek Formation (Montana Group), Lancian (70.6 - 66.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: fluvial; siltstone
Size classes: macrofossils, mesofossils
Collected by J. Hoganson
Collection methods: surface (in situ),
Primary reference: J. W. Hoganson, J. M. Campbell, and E. C. Murphy. 1994. Stratigraphy and paleontology of the Cretaceous Hell Creek Formation, Stumpf site, Morton County, North Dakota. Proceedings of the North Dakota Academy of Sciences 48:95 [J. Alroy/J. Alroy/M. Carrano]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 14621: authorized by John Alroy, entered by John Alroy on 15.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Ankylosauria indet. ankylosaur | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Hadrosauridae indet. Cope 1869 hadrosaurid
Edmontosaurus annectens Marsh 1892 hadrosaurine | |
Dromaeosauridae indet. Colbert and Russell 1969 maniraptoran | |
Tyrannosauridae indet. Osborn 1906 tyrannosaurid | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Alligatorinae indet. crocodilian
Brachychampsa cf. montana Gilmore 1911 crocodilian | |
Champsosaurus laramiensis Brown 1905 choristodere | |
Sauria indet. diapsid | |
Baenidae indet. Cope 1882 turtle | |
Helopanoplia distincta Hay 1908 turtle | |
Trionychidae indet. Gray 1825 softshell turtle | |
Mammalia | |
| |
cf. Didelphodon sp. Marsh 1889 metatherian | |
Meniscoessus cf. robustus Marsh 1889 multituberculate | |
Amphibia | |
Scapherpeton tectum Cope 1876 salamander
Lisserpeton cf. bairdi Estes 1965 salamander | |
Actinopteri | |
Lepisosteus sp. Agassiz 1843 gar | |
"Kindleia fragosa" = Cyclurus fragosus
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin | |
Coriops cf. amnicolus Estes 1969 bonefish | |
Chondrichthyes | |
Carcharias sp. Rafinesque 1810 sand shark | |
Myledaphus bipartitus Cope 1876 guitarfish |