LA i, Las Aguaditas North Section, southwest of San José da Jáchal (Ordovician of Argentina)

Where: San Juan, Argentina (30.3° S, 68.8° W: paleocoordinates 34.5° S, 132.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Las Aguaditas Formation, Costonian (458.4 - 457.2 Ma)

• Nemagraptus gracilis zone

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified marl and claystone

• marlstones in slumps (Fig. 2).

Size class: macrofossils

Primary reference: G. D. Edgecombe, B. D. E. Chatterton, N.E. Vaccari and B.G. Waisfield. 1999. Ordovician cheirurid trilobites from the Argentine Precordillera. Journal of Paleontology 73(6):1155-1175 [A. Miller/S. Kolbe]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115230: authorized by Arnold Miller, entered by Sarah Kolbe on 31.08.2011, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Phacopida - Cheiruridae
Nieszkowskia sp.
Nieszkowskia sp. Schmidt 1881 trilobite
 Phacopida - Calymenidae
Platycalymene trapezoidalis
Platycalymene trapezoidalis Baldis and Pothe 1995 trilobite