Where: Colfax County, New Mexico (36.3° N, 104.8° W: paleocoordinates 40.7° N, 72.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Smoky Hill Shale Member (Niobrara Formation), Santonian (86.3 - 83.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Smoky Hill Shale Mbr of the Niobrara Fm, which regionally overlies the Fort Hays Limestone. AGE: Santonian, on the basis of inoceramid and ammonite biostratigraphy; Prionocyclus quadratus biozone. STRATIGRAPHIC POSITION: Bed 4, in the sandy unit, from near middle of section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, gray, sandy limestone
Size class: macrofossils
Preservation: cast, mold/impression
Collected by Scott, Cobban, Merewether, Buckhorn in 1984; reposited in the UNSM
• COLLECTORS: Scott, Cobban, Merewether, and Buckhorn (1984). REPOSITORY: USNM.
Primary reference: G. R. Scott, W. A. Cobban, and E. A. Merewether. 1986. Stratigraphy of the Upper Cretaceous Niobrara Formation in the Raton basin, New Mexico. New Mexico Bureau of Mines and Mineral Resources Bulletin 115:1-34 [A. Hendy/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 82264: authorized by Austin Hendy, entered by Austin Hendy on 25.07.2008
Creative Commons license: CC BY (attribution)