Locality 1. Gualcamayo, Cerro Viejo, Cerro Cumillango, (Ordovician of Argentina)

Where: San Juan, Argentina (30.0° S, 69.0° W: paleocoordinates 36.9° S, 130.2° W)

• local area-level geographic resolution

When: Oepikodus evae conodont zone, San Juan Formation, Arenig (478.6 - 466.0 Ma)

• Upper Arenig section of San Juan Fm.

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, gray, green, argillaceous, cherty/siliceous limestone and marl

• massive cherty limestone, thin-bedded light gray argillaceous limestone, and thin-bedded green marls

Size classes: macrofossils, mesofossils

Primary reference: J. L. Benedetto and Z.A. Herrera. 1993. New early Ordovician Leptellinae (Brachiopoda) from the San Juan Formation, west-central Argentina. Ameghiniana 30:39-58 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8743: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 28.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily brachiopod, sponge, and trilobite taxonomy and biostrat.
Show authors, comments, and common names
Gastropoda
 Euomphalina - Macluritidae
Maclurites sp.
Maclurites sp. Le Sueur 1818 snail
Rhynchonellata
 Orthida - Orthidiellidae
Orthidium sp.
Orthidium sp. Hall and Clarke 1892
 Orthida - Hesperonomiidae
Monorthis sp.
 Orthida - Orthidae
Taphrorthis sp., Paralenorthis sp.
Taphrorthis sp. Cooper 1956
Paralenorthis sp. Havlicek and Branisa 1980
 Orthida - Platystrophiidae
Platystrophia sp.
 Orthida - Plectorthidae
? Nanorthis sp.
? Nanorthis sp. Ulrich and Cooper 1936
Strophomenata
 Strophomenida - Taffiidae
Huacoella sp., Niquivilia sp., Leptella sp., "Petroria sp." = Leptella (Petroria)
Huacoella sp. Benedetto and Herrera 1993
Niquivilia sp. Benedetto and Herrera 1993
Leptella sp. Hall and Clarke 1892
"Petroria sp." = Leptella (Petroria)
 Billingsellida - Polytoechiidae
Tritoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
Stenolaemata
 Trepostomida -
Nicholsonella sp.
Nicholsonella sp. Ulrich 1890
Trilobita
 Corynexochida - Leiostegiidae
Annamitella sp.
Annamitella sp. Mansuy 1920 trilobite
 Phacopida - Pliomeridae
Benedettia sp.
Benedettia sp. Toro and Mondali 1981 trilobite
Radiocyatha
  - Soanitidae
Calathium sp.
Calathium sp. Billings 1865
 Pulchrilaminida - Pulchrilaminidae
Pulchrilamina sp.
Pulchrilamina sp. Toomey and Ham 1967
Demospongiae
 Lithistida - Anthaspidellidae
Archaeoscyphia sp., Protachilleum sp.
Archaeoscyphia sp. Hinde 1889 demosponge
Protachilleum sp. Zittel 1877 demosponge