Also known as Twin Springs Canyon collection from beds 26 ft above base of formation

Where: Arizona (35.9° N, 113.6° W: paleocoordinates 1.3° N, 43.9° 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, fine-grained, gray limestone

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 42697: authorized by John Alroy, entered by Carl Simpson on 04.08.2004

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