ammonites
Toroweap Valley East, Unnumbered collection (Carboniferous of the United States)

Also known as 126 ft from base of formation, upper slope unit

Where: Arizona (36.2° N, 113.0° W: paleocoordinates 2.2° N, 42.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Watahomigi Formation (Supai Group), Atokan (318.1 - 311.4 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, reddish-gray, aphanitic, sandy, thin-bedded (average 6 in); contains some rounded pebbles; contains abundant fossils; weathers to moderate-brown, irregular surface

Size class: macrofossils

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 42715: authorized by John Alroy, entered by Carl Simpson on 04.08.2004

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