ammonites
Rio Salinas, Tinu, Tu-2.05 (Cambrian of Mexico)

Where: Oaxaca, Mexico (17.4° N, 97.2° W: paleocoordinates 12.6° S, 109.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Yudachica Member (Tinu Formation), Sunwaptan (498.5 - 488.3 Ma)

• Furongian stage 10

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified wackestone

• shallow subtidal, wave-dominated, slightly dysoxic facies
• carbonate horizon (mainly wacke- to grainstone) in the lower part of the 12-13 m thick shale-carbonate Yudachica Member

Size class: macrofossils

Preservation: cast

Primary reference: M. Streng, B. B. Mellbin, E. Landing and J. D. Keppie. 2011. Linguliform brachiopods from the terminal Cambrian and lowest Ordovician of the Oaxaquia Microcontinent (southern Mexico). Journal of Paleontology 85(1):122-155 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106255: authorized by Wolfgang Kiessling, entered by Uta Merkel on 04.03.2011