Arenig section of San Juan Fm., Quebrada Ancha and Talacasto, Argentina (Ordovician of Argentina)

Where: Argentina (31.0° S, 69.0° W: paleocoordinates 36.0° S, 130.8° W)

• local area-level geographic resolution

When: San Juan Formation, Arenig (478.6 - 466.0 Ma)

• Arenig section of San Juan Fm.

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, gray limestone and dolomite

• light to dark gray limestone and dolomite

Primary reference: T. M. Sanchez and B.G. Waisfeld. 1995. Benthic assemblages in the northwestern of Gondwana: A test of the Ordovician evolutionary radiation model. In J.D. Cooper, M.L. Droser, S.C. Finney (eds.), Ordovician Odyssey: Short papers for the seventh international symposium on the Ordovician system 409-412 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 8721: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 28.08.2000, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Arancibia sp., Nexospingia sp.
Rostroconchia
 Ribeirioida - Technophoridae
Ribeiria cf. compressa
Ribeiria cf. compressa Whitfield 1886
 Ribeirioida - Ischyriniidae
Tolmachovia sp.
Tolmachovia sp. Howell and Kobayashi 1936
Rhynchonellata
 Pentamerida - Camerellidae
Idiostrophia sp.
Idiostrophia sp. Ulrich and Cooper 1936
 Pentamerida - Tetralobulidae
Punctolira sp.
 Orthida - Archaeorthidae
Archaeorthis sp.
Archaeorthis sp. Schuchert and Cooper 1931
 Orthida - Orthidiellidae
Orthidium sp.
Orthidium sp. Hall and Clarke 1892
 Orthida - Hesperonomiidae
Hesperonomia sp., Monorthis sp.
Hesperonomia sp. Ulrich and Cooper 1936
 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., Acanthotoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
Stenolaemata
 Trepostomida -
Nicholsonella sp.
Nicholsonella sp. Ulrich 1890
Trilobita
 Proetida - Bathyuridae
Uromystrum sp., Peltabellia sp.
Uromystrum sp. Whittington 1953 trilobite
Peltabellia sp. Whittington 1953 trilobite
 Proetida - Telephinidae
Carolinites sp., Opipeuter sp.
Carolinites sp. Kobayashi 1940 trilobite
Opipeuter sp. Fortey 1974 trilobite
 Corynexochida - Illaenidae
Illaenus sp., Platillaenus sp.
Illaenus sp. Dalman 1827 trilobite
Platillaenus sp. Jaanusson 1954 trilobite
 Corynexochida - Leiostegiidae
Leiostegium sp., Annamitella sp.
Leiostegium sp. Raymond 1913 trilobite
Annamitella sp. Mansuy 1920 trilobite
 Harpetida - Harpetidae
"Selenoharpes sp." = Scotoharpes
"Selenoharpes sp." = Scotoharpes Lamont 1948 trilobite
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Phacopida - Cheiruridae
Cyrtometopus sp.
Cyrtometopus sp. Angelin 1854 trilobite
 Phacopida - Pliomeridae
Benedettia sp., Ectenonotus sp., ? Pliomerops sp.
Benedettia sp. Toro and Mondali 1981 trilobite
Ectenonotus sp. Raymond 1920 trilobite
? Pliomerops sp. Raymond 1905 trilobite
Demospongiae
 Lithistida - Streptosolenidae
Hudsonospongia sp., Allosaccus sp., Eospongia sp.
Hudsonospongia sp. Raymond and Okulitch 1940 demosponge
Allosaccus sp. demosponge
Eospongia sp. Billings 1861 demosponge
 Lithistida - Anthaspidellidae
Archaeoscyphia sp.
Archaeoscyphia sp. Hinde 1889 demosponge