Where: Valley County, Montana (47.9° N, 106.2° W: paleocoordinates 54.5° N, 79.0° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Collected by B. Brown in 1909; reposited in the AMNH
Primary reference: R. S. Lull and N. E. Wright. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Paper 40:1-242 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 48629: authorized by Matthew Carrano, entered by Matthew Carrano on 24.03.2005, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
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Thescelosaurus neglectus2 Gilmore 1913 ornithopod Galton 1997 lists AMNH 5020, but AMNH site lists AMNH 5052; confirmed by Galton 1974
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