ridge between Buck Creek and Lance Creek (Cretaceous of the United States)

Also known as Triceratops flabellatus type

Where: Niobrara County, Wyoming (43.2° N, 104.6° W: paleocoordinates 49.8° N, 78.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lance Formation, Maastrichtian (72.1 - 66.0 Ma)

• "Laramie"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, sandy marl

• "arenaceous shale", also descriibed as "loose sandy marl"

Size classes: macrofossils, mesofossils

Collected by J. B. Hatcher in 1889; reposited in the YPM

Collection methods: quarrying, surface (in situ), mechanical,

• collected by J. B. Hatcher, June 1 1889

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 46136: authorized by Matthew Carrano, entered by Matthew Carrano on 04.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes mammals, vertebrates and invertebrates, but none are named
Reptilia
 Neornithischia - Ceratopsidae
"Triceratops flabellatus n. sp." = Triceratops horridus
"Triceratops flabellatus n. sp." = Triceratops horridus Marsh 1889 ceratopsid
YPM 1821 (= Sk. 2)
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal