Also known as Cerro La Silla, San Juan Formation, Archaeorthis zone, San Juan
Where: San Juan, Argentina (30.3° S, 68.7° W: paleocoordinates 38.6° S, 128.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Archaeorthis brachiopod zone, San Juan Formation, Tremadoc (486.5 - 477.7 Ma)
• beds L2 and L4; P. deltifer and P. proteus conodont zones; Archaeorthis brachiopod zone
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; lithified wackestone and lithified grainstone
Size class: macrofossils
Preservation: replaced with silica
Primary reference: J. L. Benedetto, N. Cech, and C. Esbry. 2003. New Late Tremadoc-Early Arenig silicified brachiopods from the lower part of the San Juan Formation, Argentine Precordillera. Ameghiniana 40(4):513-530 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 66891: authorized by Wolfgang Kiessling, entered by Uta Merkel on 20.10.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Orthidium prominens Benedetto et al. 2003 | |
| |
Syntrophia sanjuanina Benedetto et al. 2003 | |
Strophomenata | |
Tritoechia (Parvitritoechia) preandina Benedetto et al. 2003
Tritoechia (Tritoechia) prima Benedetto et al. 2003 |