Where: Peru (14.1° S, 75.7° W: paleocoordinates 15.0° S, 71.6° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Chilcatay Formation, Burdigalian (20.4 - 16.0 Ma)

• Originally Early Miocene

•Formation is estimated to be 250 m thick and consists of siltstones and sandstones interbedded with diatomaceous units through three transgressive cycles (Macharé & Fourtanier 1987; Dunbar et al. 1990). Chronostratigraphically, the formation ranges from about 24 Ma (earliest early Miocene) to 15 Ma (early middle Miocene) where its upper part is assigned to N8 foraminiferan zone (DeVries 1988, 1998; Dunbar et al. 1990). This range corresponds to Aquitanian–Burdigalian in age.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: original phosphate

Primary reference: K. Shimada, R. E. Chandler, O. Lok Tao Lam, T. Tanaka, and D. J. Ward. 2017. A new elusive otodontid shark (Lamniformes: Otodontidae) from the lower Miocene, and comments on the taxonomy of otodontid genera, including the ‘megatoothed’ clade. Historical Biology 29(5):704-714 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197512: authorized by Patricia Holroyd, entered by Patricia Holroyd on 14.11.2018

Creative Commons license: CC BY (attribution)