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Portezuelo de La Alumbrera Creek, Famatina Range, Upper Volcancito Formation (Ordovician of Argentina)

Where: Argentina (29.3° S, 67.8° W: paleocoordinates 39.8° S, 128.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: upper Member (Volcancito Formation), Tremadoc (488.3 - 478.6 Ma)

• Late Tremadoc

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified siltstone

• below storm-wave base in an outer shelf setting
• dark grey to yellowish green, massive or parallel-laminated clayey siltstones

Size class: macrofossils

Primary reference: M. F. Tortello and S. B. Esteban. 2003. Lower Ordovician stratigraphy and trilobite faunas from the southern Famatina Range, La Rioja, Argentina. Special Papers in Palaeontology 70:213-239 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 66205: authorized by Wolfgang Kiessling, entered by Uta Merkel on 05.10.2006

Creative Commons license: CC BY (attribution)