Where: Inyo County, California (36.9° N, 118.1° W: paleocoordinates 6.8° S, 82.0° W)

• coordinate based on nearby landmark

When: Johnson Spring Formation, Trentonian (457.3 - 449.6 Ma)

• M-1 (same as unit 14, Pestana, 1960, p. 862) The lower two thirds of the first limestone below the uppermost quartzite of the Johnson Spring formation on the north side of Lead Canyon.

•M-2 (same as unit 12, Pestana, 1960, p. 863) The limestone below the second uppermost quartzite of the Johnson Spring formation on the north side of Lead Canyon.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, massive, nodular limestone and quartzite

Size class: macrofossils

Collected by J. F. Hall

Collection methods: surface (in situ),

Primary reference: J. F. Hall. 1963. Fossils from the Middle Ordovician of the Independence Quadrangle, California. Journal of Paleontology 37(5):1116-1119 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 219389: authorized by Jonathan Marcot, entered by Jonathan Marcot on 08.04.2021

Creative Commons license: CC BY (attribution)