Where: Colón, Panama (9.4° N, 79.9° W: paleocoordinates 9.1° N, 78.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: lower Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)

• lower part of the Gatun Formation. The Gatun Formation is subdivided into three faunal zones (proposed by Thomson and Keen, 1946): lower, middle, and upper. AGE: Late Miocene, on the basis of microfossil biostratigraphy (see Collins and Coates, 1999), refined by enterer to Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 11.1 Ma (Hendy, unpublished data).

Environment/lithology: marine; marl

Size class: microfossils

Collected by J. Embich in 1934; reposited in the AMNH

Primary reference: H. N. Coryell and S. Fields. 1937. A Gatun ostracode fauna from Cativa, Panama. American Museum Novitates 956:1-18 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93909: authorized by John Alroy, entered by John Alroy on 06.02.2010

Creative Commons license: CC BY (attribution)