Where: Jujuy, Argentina (22.2° S, 65.6° W: paleocoordinates 47.7° S, 127.0° W)

When: Cordylodus proavus trilobite zone, Lampazar Formation, Furongian (497.0 - 485.4 Ma)

• This often is considered Tremadoc, but it is Latest Cambrian. The Parabolina (Neoparabolina) frequens argentina trilobite zone spans the boundary, but the conodont zone is restricted to the latest Cambrian

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, black shale and calcareous siltstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: T. M. Sánchez. 2000. The oldest record of Rostroconchia (Mollusca) from western Gondwana (Cordillera Oriental, northwestern Argentina). Ameghiniana 37(3):265-269 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 167761: authorized by Pete Wagner, entered by Pete Wagner on 31.03.2015

Creative Commons license: CC BY (attribution)