La Cienega Fm., La Cienega anticline, Bolivia (Ordovician of Bolivia)

Where: Bolivia (19.0° S, 65.0° W: paleocoordinates 44.6° S, 129.3° W)

• local area-level geographic resolution

When: La Cienega Formation, Caradoc (458.4 - 449.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, gray, green, argillaceous, silty sandstone and shale

• silty, clayey, micaceous, fine-grained sandstone with thin intercalations of grey-green to light gray shale

Collection methods: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete

Primary reference: R. Suarez Soruco. 1976. El sistema ordovicico en Bolivia. Revista Tecnica YPF Bolivia 5(2):111-123 [A. Miller/P. Novack-Gottshall/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8855: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 01.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

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Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras sp.
Orthoceras sp. Breynius 1832
Lingulata
 Lingulida - Discinidae
Orbiculoidea sp.
Orbiculoidea sp. d'Orbigny 1847
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
 Lingulida - Obolidae
Lingulepis sp.
Lingulepis sp. Hall 1863
Rhynchonellata
 Orthida - Plaesiomyidae
Dinorthis sp.
Dinorthis sp. Hall and Clarke 1892