Lower Arenig section of San Juan Fm., Huaco anticline, Rio Gualcamayo, Cerro Vie (Ordovician of Argentina)

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

• local area-level geographic resolution

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

• Lower Arenig section of San Juan Fm.

• formation-level stratigraphic resolution

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

• medium to thick-bedded, massive, cherty limestone and light gray thin-bedded argillaceous limestone and light green marl

Primary reference: M. Keller, F. Canas, O. Lehnert and N. E. Vaccari. 1994. The Upper Cambrian and Lower Ordovician of the Precordillera (Western Argentina): Some stratigraphic reconsiderations. Newsletters on Stratigraphy 31(2):115-132 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8744: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 28.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily brachiopod and conodont taxonomy and biostrat.
Show authors, comments, and common names
unclassified
  -
Distodus sp.
Conodonta
 Prioniodontida - Balognathidae
Reutterodus sp., Prioniodus sp.
Prioniodus sp. Pander 1856 conodont
 Prioniodontida - Paracordylodontidae
Oelandodus sp.
Oelandodus sp. van Wamel 1974 conodont
 Prioniodontida - Acodontidae
Tropodus sp., Acodus sp.
Tropodus sp. Kennedy 1980 conodont
Acodus sp. Pander 1856 conodont
 Prioniodontida - Polyplacognathidae
Polonodus sp.
Polonodus sp. Dzik 1976 conodont
 Prioniodontida -
Oepikodus sp., Paracordylodus sp.
Oepikodus sp. Lindström 1955 conodont
Paracordylodus sp. Lindström 1955 conodont
 Prioniodontida - Rhipidognathidae
Bergstroemognathus sp.
Bergstroemognathus sp. Serpagli 1974 conodont
 Prioniodontida - Oistodontidae
Jumudontus sp.
Jumudontus sp. Cooper 1981 conodont
 Belodellida - Belodellidae
Stolodus sp.
Stolodus sp. Lindström 1955 conodont
 Belodellida - Ansellidae
Ansella sp.
Ansella sp. conodont
 Protopanderodontida - Cornuodontidae
Cornuodus sp.
Cornuodus sp. conodont
 Protopanderodontida - Protopanderodontidae
Drepanodus sp., Protopanderodus sp., Juanognathus sp., Scolopodus sp.
Drepanodus sp. Pander 1856 conodont
Protopanderodus sp. Lindström 1971 conodont
Juanognathus sp. Serpagli 1974 conodont
Scolopodus sp. conodont
 Protopanderodontida - Clavohamulidae
Clavohamulus sp.
 Protopanderodontida - Acanthodontidae
Ulrichodina sp.
Ulrichodina sp. Furnish 1938 conodont
 Protopanderodontida - Drepanoistodontidae
Paroistodus sp., Drepanoistodus sp.
Paroistodus sp. Lindström 1971 conodont
Drepanoistodus sp. Lindstrom 1971 conodont
  -
Fahraeosodus sp.
Fahraeosodus sp. Stouge and Bagnoli 1988 conodont
Strophomenata
 Billingsellida - Polytoechiidae
Tritoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
 Strophomenida - Leptellinidae
? Leptellina sp.
? Leptellina sp. Ulrich and Cooper 1936
PJW: was ? Leptellina sp., but this entry probably was in error; that is Llanvirn in this formation.
 Strophomenida - Taffiidae
Huacoella sp., Leptella sp., "Petroria sp." = Leptella (Petroria)
Huacoella sp. Benedetto and Herrera 1993
Leptella sp. Hall and Clarke 1892
"Petroria sp." = Leptella (Petroria)
Rhynchonellata
 Pentamerida - Tetralobulidae
? Imbricatia sp., Punctolira sp.
 Orthida - Hesperonomiidae
Protohesperonomia sp., Hesperonomia sp.
Hesperonomia sp. Ulrich and Cooper 1936
 Orthida - Archaeorthidae
Archaeorthis sp.
Archaeorthis sp. Schuchert and Cooper 1931
 Orthida - Orthidiellidae
Orthidium sp.
Orthidium sp. Hall and Clarke 1892