Where: Peru (13.8° S, 76.3° W: paleocoordinates 15.9° S, 69.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Otuma Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Otuma Fm, which regionally is unconformably overlain by the Prisco Fm (late Early Miocene to Late Pliocene). AGE: Eocene/Oligocene in text, on the basis of K/Ar dates, siliceous microfossil zonation, and molluscan biostratigraphy. Here assigned to Early Oligocene consistent with other collections from formation. STRATIGRAPHIC POSITION: From sandstone section that disconformably overlies thin-bedded gray siltstones and is truncated above by a fault.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, shelly/skeletal sandstone and poorly lithified, fine-grained sandstone

Size class: macrofossils

Preservation: original aragonite, original calcite

Collection methods: surface (in situ),

• COLLECTOR: DeVries. REPOSITORY: Either UWBM, Washington, or MUSM, Peru.

Primary reference: T. J. DeVries. 1998. Oligocene deposition and Cenozoic sequence boundaries in the Pisco Basin (Peru). Journal of South American Earth Sciences 11(3):217-231 [A. Miller/A. Hendy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41619: authorized by Austin Hendy, entered by Austin Hendy on 18.07.2004

Creative Commons license: CC BY (attribution)