UCMP loc. IP 12003, 1/2 mile west of Magruder Mountain Peak (Cambrian of the United States)

Where: Esmeralda County, Nevada (37.4° N, 117.6° W: paleocoordinates 3.2° S, 97.1° W)

• coordinate based on political unit

When: Poleta Formation, Montezuman (520.0 - 515.3 Ma)

• lower limestone

Environment/lithology: reef, buildup or bioherm; lithified, massive, shelly/skeletal, argillaceous bafflestone and calcareous siltstone

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the UCMP

Collection methods: surface (in situ)

Primary reference: E. H. McKee and R. A. Gangloff. 1969. Stratigraphic distribution of archaeocyathids in the Silver Peak Range and the White and Inyo Mountains, western Nevada and Eastern California. Journal of Paleontology 43(3):716-726 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 226375: authorized by Jonathan Marcot, entered by Jonathan Marcot on 01.07.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Archaeocyatha
 Capsulocyathida - Coscinocyathidae
Coscinocyathus "sp. 6a" Bornemann 1884 archaeocyath sponge