8 km west-southwest of Winifred (Cretaceous of the United States)

Where: Fergus County, Montana (47.5° N, 109.5° W: paleocoordinates 54.6° N, 75.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Coal Ridge Member (Judith River Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• unclear whether these beds represent the Lisangou Fm. or the Xipongnaobao Fm.

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; sideritic, silty, carbonaceous mudstone

• "an overbank deposit in a floodplain environment"
• "a mudstone, with abundant plant fragments throughout, and a siderite nodule zone at the top."

Size class: macrofossils

Collected by B. Shipp & J. Gilpatrick in 2005–2007

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

Primary reference: J. C. Mallon, C. J. Ott, P. L. Larson, E. M. Iuliano, and D. C. Evans. 2016. Spiclypeus shipporum gen. et sp. nov., a boldly audacious new chasmosaurine ceratopsid (Dinosauria: Ornithischia) from the Judith River Formation (Upper Cretaceous: Campanian) of Montana, USA. PLoS ONE 11(5):e0154218:1-40 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 55274: authorized by Matthew Carrano, entered by Kaitlin Maguire on 05.10.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ornithischia - Ceratopsidae
Spiclypeus shipporum n. gen. n. sp.
Spiclypeus shipporum n. gen. n. sp. Mallon et al. 2016 ceratopsid
CMN 58071