Cachiyuyo River section. 1800 m above base. Famatina Range (Ordovician of Argentina)

Where: La Rioja, Argentina (26.4° S, 66.9° W: paleocoordinates 39.7° S, 130.7° W)

• local area-level geographic resolution

When: Baltograptus minutus graptolite zone, Suri Formation, Arenig (478.6 - 466.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale and sandstone

• "...marine shales, sandstones, and layers of volcaniclastic material."

Size class: macrofossils

Preservation: mold/impression

Collection methods: quarrying,

Primary reference: T. M. Sanchez. 1997. Additional Mollusca (Bivalvia and Rostroconchia) from the Suri Formation, Early Ordovician (Arenig), western Argentina. Journal of Paleontology 71(6):1046-1053 [A. Miller/R. Krause/R. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 169615: authorized by Pete Wagner, entered by Pete Wagner on 31.05.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Modiomorphida - Modiomorphidae
? Colpomya sp. Ulrich 1893 clam
 Cardiomorphi - Lipanellidae