Also known as Trachodon longiceps type
Where: Converse County, Wyoming (42.6° N, 105.4° W: paleocoordinates 49.2° N, 80.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• same stratum as Triceratops horridus type
• bed-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; poorly lithified, yellow sandstone and shale
Size classes: macrofossils, mesofossils
Collected by J. B. Hatcher in 1889; reposited in the YPM
Collection methods: quarrying, surface (in situ), mechanical,
Primary reference: J. B. Hatcher, O. C. Marsh, and R. S. Lull. 1907. The Ceratopsia. Monographs of the United States Geological Survey 49:1-198 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 46120: authorized by Matthew Carrano, entered by Matthew Carrano on 03.01.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gnathostomata | |
Osteichthyes indet. bony fish | |
Reptilia | |
Reptilia indet. Laurenti 1768 reptile | |
"Trachodon longiceps n. sp." = Edmontosaurus annectens
"Trachodon longiceps n. sp." = Edmontosaurus annectens Marsh 1892 hadrosaurine | |
Mammalia | |
| |
Amphibia | |
Amphibia indet. Linnaeus 1758 tetrapod |