Gateway to the Paleobiology Database
Bear Springs ( of the United States)

Where: Graham County, Arizona (32.8° N, 110.0° W: paleocoordinates 33.0° N, 109.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Gila Conglomerate Formation, Blancan (4.9 - 1.8 Ma)

• mostly from 4 localities within 10 m of section; additional locality about 10 m upsection

• member-level stratigraphic resolution

Environment/lithology: fluvial; sandstone and claystone

• said to be from the "silt and sand facies," but most fossil collections are shown in sandstone or claystone horizons

•said to be from "alluvial fan" deposits

Size classes: macrofossils, mesofossils

Collection methods: bulk, surface (float), sieve

Primary reference: Y. Tomida. 1987. Small mammal fossils and correlation of continental deposits, Safford and Duncan basins, Arizona. National Science Museum 1-141 [J. Alroy/J. Alroy/J. Alroy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 19651: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)