ammonites
Pigeon Wash, USGS 25131-PC (Carboniferous of the United States)

Where: Arizona (36.3° N, 113.8° W: paleocoordinates 1.7° N, 43.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Watahomigi Formation (Supai Group), Morrowan (318.1 - 314.6 Ma)

• The Watahomigi is comprised of three informal units: a lower slope unit, a middle cliff unit, and an upper slope unit.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, gray limestone

• Limestone, medium-light-gray to grayish-pink, aphantic, thin- to medium-bedded (6-24 in); forms bench or receding ledge

Size class: macrofossils

Reposited in the USGS

Primary reference: E. D. McKee. 1982. The Supai Group of the Grand Canyon. United States Geological Survey Professional Paper 1173 [J. Alroy/C. Simpson/C. Simpson] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 42666: authorized by John Alroy, entered by Carl Simpson on 03.08.2004

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)