Where: San Juan, Argentina (30.6° S, 68.9° W: paleocoordinates 34.9° S, 132.5° W)

When: Yangtzeplacognathus crassus conodont zone, Lower Member (Los Azules Formation), Darriwilian (467.3 - 458.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: deep-water; bioturbated, gray mudstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: J. L. Benedetto. 2015. A Middle Ordovician (Darriwilian) dysaerobic brachiopod assemblage from the Precordillera terrane of Argentina: implications for early colonization of deep waters. Ameghiniana 52(1):69-106 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 195043: authorized by Pete Wagner, entered by Pete Wagner on 13.07.2018

Creative Commons license: CC BY (attribution)