Where: Bowman County, North Dakota (46.2° N, 103.8° W: paleocoordinates 52.4° N, 77.2° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• datum -5.50, K-T section 86148
• bed-level stratigraphic resolution
Environment/lithology: "channel"; silty mudstone
Size classes: macrofossils, mesofossils
Primary reference: D. A. Pearson, T. Schaefer, K. R. Johnson, D. J. Nichols, and J. P. Hunter. 2002. Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. In J. H. Hartman, J. R. Johnson, and D. J. Nichols (eds.), The Hell Creek Formation and the Cretaceous-Tertiary Boundary in the Northern Great Plains: An Integrated Continental Record of the End of the Cretaceous, Geological Society of America Special Paper 361:145-167 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 45133: authorized by Matthew Carrano, entered by Matthew Carrano on 06.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
|
Compsemys victa Leidy 1856 turtle | |
|
Baenidae indet. Cope 1882 turtle
Plesiobaena antiqua Lambe 1902 turtle | |
|
Chelydridae indet. Swainson 1839 turtle | |
|
Trionychidae indet. Gray 1825 softshell turtle | |
|
Adocus sp. Cope 1868 turtle | |
|
Ceratopsidae indet. Marsh 1888 ceratopsid | |
| Amphibia | |
|
Scapherpeton tectum Cope 1876 salamander | |
| Actinopteri | |
|
Melvius thomasi Bryant 1987 bowfin | |
|
Lepisosteus occidentalis Leidy 1856 gar | |
| Osteichthyes | |
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