Lower Llanvirn section of San Juan Fm., Sierra de Villicum, Cerro Viejo, and Cer: Early/Lower Llanvirn, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Anthaspidellidae
Psarodictyum sp. Raymond and Okulitch 1940
Archaeoscyphia sp. Hinde 1889
Patellispongia sp. Bassler 1927
Rhopalocoelia sp. Raymond and Okulitch 1940
Calycocoelia sp. Bassler 1927
Incrassospongia sp. Rigby 1977
Demospongiae - Streptosolenidae
Aulocopium sp. Oswald 1847
Hudsonospongia sp. Raymond and Okulitch 1940
Allosaccus sp.
Heteractinida - Octactinellida - Eiffeliidae
Chilcaia sp. Carrera 1994
Conodonta - Prioniodontida - Polyplacognathidae
Eoplacognathus sp. Hamar 1966
Polonodus sp. Dzik 1976
Pterobranchia - Graptoloidea
Undulograptus sp. Bouček 1973
Rhynchonellata - Orthida - Paurorthidae
Paurorthis sp. Schuchert and Cooper 1931
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia sp. King 1850
Rhynchonellata - Orthida - Plectorthidae
Nanorthis sp. Ulrich and Cooper 1936
Rhynchonellata - Orthida - Phragmorthidae
Phragmorthis sp. Cooper 1956
Rhynchonellata - Orthida - Orthidiellidae
Orthidium sp. Hall and Clarke 1892
Rhynchonellata - Orthida - Plaesiomyidae
Valcourea sp. Raymond 1911
Rhynchonellata - Orthida - Productorthidae
Productorthis sp. Kozlowski 1927
Rhynchonellata - Orthida - Archaeorthidae
Pleurorthis sp. Cooper 1956
Rhynchonellata - Orthida - Orthidae
Paralenorthis sp. Havlicek and Branisa 1980
Rhynchonellata - Pentamerida - Porambonitidae
Porambonites sp. Pander 1830
Rhynchonellata - Pentamerida - Camerellidae
Idiostrophia sp. Ulrich and Cooper 1936
Strophomenata - Billingsellida - Polytoechiidae
Tritoechia sp. Ulrich and Cooper 1936
Strophomenata - Billingsellida - Tritoechiidae
Pomatotrema sp. Ulrich and Cooper 1932
Strophomenata - Strophomenida - Leptellinidae
Leptellina sp. Ulrich and Cooper 1936
Strophomenata - Strophomenida - Taffiidae
Taffia sp. Butts 1926
Sanjuanella sp.
Leptella sp. Hall and Clarke 1892
Petroria sp.
spelled with current rank as Leptella (Petroria)
Ahtiella sp. Öpik 1932
Inversella sp. Opik 1933
Reinversella sp.
spelled with current rank as Inversella (Reinversella)
see common names

Geography
Country:Argentina
Coordinates: 30.0° South, 69.0° West (view map)
Paleocoordinates:35.5° South, 131.3° West
Geographic resolution:local area
Time
Period:Ordovician Epoch:Middle Ordovician
10 m.y. bin:Ordovician 2-3
*Period:Middle Ordovician *Epoch:Early/Lower Llanvirn
*International age/stage:Early/Lower Llanvirn
Key time interval:Early/Lower Llanvirn
Age range of interval:468.40000 - 461.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:San Juan
Stratigraphic resolution:formation
Stratigraphy comments: Lower Llanvirn section of San Juan Fm.
Lithology and environment
Primary lithology:shelly/skeletal lithified argillaceous,cherty/siliceous "limestone"
Secondary lithology: mudstone
Lithology description: nodular, skeletal wackestone, grainstone, and packstone (limestone), sometimes argillaceous, with occasional calcarenites and mudstones
Environment:marine indet.
Taphonomy
Collection methods and comments
Collection excludes:some macrofossils,some microfossils,species names
Taxonomic list comments:Primarily brachiopod and sponge taxonomy and biostrat.
Metadata
Database number:8747
Authorizer:A. Miller Enterer:P. Novack-Gottshall
Modifier:P. Novack-Gottshall Research group:marine invertebrate
Created:2000-08-28 12:35:51 Last modified:2000-09-24 19:47:52
Access level:the public Released:2000-11-20 13:53:41
Creative Commons license:CC BY
Reference information

Primary reference:
646. Z. A. Herrera and J. L. Benedetto. 1987. El genero Reinversella (Brachiopoda) en el Ordovicico temprano de la Precordillera Argentina y su significado paleobiogeografico. Actas del decimo congreso geologico argentino 3:77-80 [A. Miller/P. Novack-Gottshall]