Where: Argentina (30.0° S, 69.0° W: paleocoordinates 36.6° S, 130.1° W)
• local area-level geographic resolution
When: San Juan Formation, Arenig to Arenig (478.6 - 461.1 Ma)
• Late Arenig/Lower Llanvirn section of San Juan Fm.
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal shelf; lithified, concretionary, gray, green limestone and marl
Collection methods: Cephalopod taxonomy and biostrat.
Primary reference: F. G. Acenolaza, F.R. Durand, and R.D. Taddei. 1977. Nautiloideos Ordovicicos de la Precordillera Argentina. Fauna de Huaco, Provincia de San Juan. Acta Geologica Lilloana 13(8):219-242 [A. Miller/P. Novack-Gottshall]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 8720: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 28.08.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Rhynchonellata | |
|
Orthis sp. Dalman 1828 | |
| Stenolaemata | |
|
Monticulipora sp. d'Orbigny 1850 | |
| Cephalopoda | |
|
Piloceras sp. Salter 1859 | |
|
Protocycloceras sp. Hyatt 1900
Cyptendoceras sp. Ulrich and Foerste 1936 | |
|
Robsonoceras sp. Ulrich and Foerste 1933
Oelandoceras sp. Foerste 1932 | |
|
Curtoceras sp. Ulrich et al. 1942 | |
|
Anaspyroceras sp. Shimizu and Obata 1935 | |
|
Angelinoceras sp. Hyatt 1894 | |
| Gastropoda | |
|
Maclurites sp. Le Sueur 1818 snail | |
| Trilobita | |
|
Annamitella sp. Mansuy 1920 trilobite | |
|
Illaenus sp. Dalman 1827 trilobite | |