Where: Niobrara County, Wyoming (43.2° N, 104.6° W: paleocoordinates 49.6° N, 79.4° W)
• coordinate based on nearby landmark
When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Collected by J. B. Hatcher in 1890; reposited in the YPM
Primary reference: O. C. Marsh. 1896. The dinosaurs of North America. United States Geological Survey, 16th Annual Report, 1894-95 55:133-244 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 64645: authorized by Matthew Carrano, entered by Matthew Carrano on 11.09.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
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