Cerro Rajon, 2 (Cambrian to of Mexico)

Also known as Locality 2

Where: Sonora, Mexico (30.4° N, 112.0° W: paleocoordinates 10.1° S, 106.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Fallotaspis? trilobite zone, Unit 2 Member (Puerto Blanco Formation), Meishucunian to Meishucunian (530.7 - 521.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; siltstone

• a shallow marine carbonate and fine clastic unit with volcanoclastics at its base

Size class: macrofossils

Preservation: mold/impression

Collection methods: surface (float), acetic,

• Specimens with IGM numbers are deposited at the Instituto de Geologia, Cuidad Universitaria, Delegación de Coyoacan

Primary reference: M. A. S. McMenamin. 1987. Lower Cambrian trilobites, donation, and correlation of the Puerto Blanco formation, Sonora Mexico. Journal of Paleontology 61(4):738-749 [N. Heim/C. Lombardi]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 210980: authorized by Noel Heim, entered by Cole Lombardi on 22.06.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Redlichiida - Fallotaspididae
cf. Fallotaspis sp.
cf. Fallotaspis sp. Hupé 1953 trilobite
IGM 3652