Also known as Semilla Sandstone type locality

Where: Sandoval County, New Mexico (35.7° N, 106.9° W: paleocoordinates 38.2° N, 73.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Prionocyclus hyatti ammonoid zone, Semilla Sandstone Member (Mancos Shale Formation), Middle Turonian (93.5 - 89.3 Ma)

• AGE: Middle Turonian, on the basis of ammonite biostratigraphy; Prionocyclus hyatti zone. STRATIGRAPHIC POSITION: material from "talus slopes"

• member-level stratigraphic resolution

Environment/lithology: shoreface; concretionary, brown, gray sandstone

Preservation: concretion

Primary reference: E. K. Toolson and B. S. Kues. 1996. Decapod crustaceans from the Semilla Sandstone Member, Mancos Shale (Upper Cretaceous), north-central New Mexico. Journal of Paleontology 70(1):111-116 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4870: authorized by John Alroy, entered by John Alroy on 27.08.1999

Creative Commons license: CC BY (attribution)