Cerro la Cienega (Cambrian of Mexico)

Where: Sonora, Mexico (30.1° N, 112.0° W: paleocoordinates 14.7° S, 109.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Puerto Blanco Formation, Nemakit-Daldynian (541.0 - 530.0 Ma)

• Ediacaran/Cambrian boundary within the upper unit 1 of Puerto Blanco Formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, dolomitic sandstone and lithified volcaniclastic

Size class: macrofossils

Preservation: trace

Primary reference: F. Sour-Tovar, J. W. Hagadorn, and T. Huitron-Rubio. 2007. Ediacaran and Cambrian index fossils from Sonora, Mexico. Palaeontology 50(1):169-175 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 99428: authorized by Wolfgang Kiessling, entered by Uta Merkel on 11.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ichnofossils -
Planolites sp. Nicholson 1873
Plagiogmus sp. Roedel 1929
Rusophycus sp. Hall 1852
Palaeophycus sp. Hall 1847