Also known as Section 1 - community shell bed type

Where: Sonora, Mexico (31.8° N, 114.1° W: paleocoordinates 31.8° N, 114.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Pleistocene fluvial, eolian, and deltaic deposits exposed in sea cliffs, overlain by coquina bed (dated at 125,00 bp)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; unlithified, burrowed, bioturbated, green, argillaceous sandstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: bulk,

• No comments on collection metholodolgy

Primary reference: K.H. Meldahl and A. H. Cutler. 1992. Neotectonics and taphonomy; Pleistocene molluscan shell accumulations in the northern Gulf of California. Palaios 7(2):187-197 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 34923: authorized by Austin Hendy, entered by Austin Hendy on 19.10.2003

Creative Commons license: CC BY (attribution)