Where: Teton County, Montana (47.7° N, 112.3° W: paleocoordinates 55.4° N, 78.8° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Lower Member (Two Medicine Formation), Early/Lower Campanian (83.5 - 70.6 Ma)
• site is about 40 m above tuff dated at 80 Ma; age estimate from this is ca. 79.43 Ma. Lower part of formation
• bed-level stratigraphic resolution
Environment/lithology: coarse channel fill; yellow, calcareous sandstone
Size class: macrofossils
Collected in 1999
Collection methods: quarrying, surface (in situ), mechanical,
• collected by "Junior Paleontologists" from Univ. of Chicago with Old Trail Museum
Primary reference: T. A. Gates, J. R. Horner, R. R. Hanna and C. R. Nelson. 2011. New unadorned hadrosaurine hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America. Journal of Vertebrate Paleontology 31(4):798-811 [M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 120363: authorized by Matthew Carrano, entered by Matthew Carrano on 11.11.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Plantae indet. Haeckel 1866 | |
Reptilia | |
Acristavus gagslarsoni n. gen. n. sp.
|