Where: Lander County, Nevada (39.9° N, 117.1° W: paleocoordinates 1.8° S, 92.8° W)

• outcrop-level geographic resolution

When: Botomian to Botomian (516.0 - 512.9 Ma)

• 50 cm thick and bounded above and below by minor unconformities, 35m of sandstone and siltstone below, 7m of massive archaeocyathan bioherm above.

• bed-level stratigraphic resolution

Environment/lithology: lithified, burrowed limestone and lithified sandstone

Preservation: original aragonite, replaced with calcite, replaced with phosphate

Reposited in the UCMP

• The Spygoria were originally aragonitic in composition, but recrystalized to calcite microspar. Biohermal in nature (framework metazoan) forming stacks on average of 2-6 ""cups"".

Primary reference: M. Salak and H. L. Lescinsky. 1999. Spygoria zappania new genus and species, a Cloudina-like biohermal metazoan from the Lower Cambrian of central Nevada. Journal of Paleontology 73(4):571-576 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9315: authorized by Mark Patzkowsky, entered by Phil Borkow on 18.10.2000

Creative Commons license: CC BY (attribution)