Gateway to the Paleobiology Database
Hogback South, MNA Locality B (Cretaceous of the United States)

Also known as #88

Where: San Juan County, New Mexico (36.5° N, 108.5° W: paleocoordinates 43.8° N, 79.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Fruitland Formation, Late/Upper Campanian (84.9 - 70.6 Ma)

• within the upper 15.2 m of the Fruitland. Two fossil horizons, approx. 20cm apart.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; concretionary, ferruginous mudstone and calcareous sandstone

Size classes: macrofossils, mesofossils

Collection methods: bulk, surface (float), chemical, sieve,

• MNA locality #88, used tandem screen boxes, with 1/16 inch mesh size and 1/25 inch mesh. Some samples were disaggregated using Amine 220 and Methyl Amyl Alcohol.

Primary reference: J. G. Armstrong-Ziegler. 1978. An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology 52(2):480-483 [J. Alroy/E. Leckey/E. Leckey] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 36541: authorized by John Alroy, entered by Erin Leckey on 03.02.2004

Creative Commons license: CC BY (attribution)