along National Road 9 near the La Caldera locality ( of Argentina)

Where: Argentina (24.6° S, 65.4° W: paleocoordinates 43.8° S, 129.4° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Kainella meridionalis trilobite zone, Caldera Sandstone Formation, Tremadoc (486.5 - 477.7 Ma)

• Rhabdinopora flabelliformis graptolite zone

•Cordylodus angulatus conodont zone

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, yellow, argillaceous, sandy sandstone and shale

• yellow-brown massive quartzitic and shaly sandstone intercalated with dark and sandy shale

Size class: macrofossils

Primary reference: J. L. Benedetto. 2007. New Upper Cambrian-Tremadoc rhynchonelliformean brachiopods from northwestern Argentina: evolutionary trends and early diversification of plectorthoideans in the Andean Gondwana. Journal of Paleontology 81(2):261-285 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9091: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 22.09.2000, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily trilobite taxonomy and biostratigraphy JA: marked by Novack-Gotshall as omitting some genera, some macrofossils, and some microfossils, but I see no indication at all that the lists are incomplete
Show authors, comments, and common names
Rhynchonellata
 Orthida - Nanorthidae
"Nanorthis calderensis n. sp." = Gondwanorthis calderensis
"Nanorthis calderensis n. sp." = Gondwanorthis calderensis Benedetto 2007