Johnson Brothers' ranch (Cretaceous of the United States)

Where: Converse County, Wyoming (42.6° N, 105.4° W: paleocoordinates 49.2° N, 80.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• about 80 feet higher than other Hatcher site on this ranch

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, yellow sandstone

Size classes: macrofossils, mesofossils

Collected by J. B. Hatcher

Collection methods: surface (in situ),

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: general faunal/floral analysis

PaleoDB collection 46125: authorized by Matthew Carrano, entered by Matthew Carrano on 04.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Gnathostomata
  -
Reptilia
  -
Reptilia indet. Laurenti 1768 reptile
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Ornithischia - Hadrosauridae
"Trachodontidae indet." = Hadrosauridae, Trachodon sp.
"Trachodontidae indet." = Hadrosauridae Cope 1869 hadrosaurid
Trachodon sp. Leidy 1856 hadrosaurid
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal