Also known as USGS 18836; field #206

Where: Panama (9.2° N, 79.9° W: paleocoordinates 7.7° N, 77.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bohio Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)

• The Bohio Formation is characterized by the presence of poorly sorted debris, mostly basaltic: very coarse debris in the form of boulders and cobbles, and finer debris formings beds of sandstone, and the matrix of conglomerate. The facies are non-mrine, but marine fossils are found in thin units in the upper part of the formation, in algal limestone and in both poorly sorted and fairly well sorted subgraywacke. The Bohio Formation overlies the Gatuncillo Formation conformably in most areas, although may lap onto the Gauncillo Formation or basement. The thickness of the formation is about 75 metres to as much as 450 metres. Smaller foraminifera from the basal part of the formation yielded a early Oligocene age. The upper part of the formation, from which the collections are derived yields larger foraminifera of late Oligocene age.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified wackestone

Size class: macrofossils

Reposited in the USNM

Collection methods: quarrying,

• Collected by Woodring (1954). Material is also held (but not specified for any specific collection) at Stanford University, Acad. Nat. Sci. Phil., Corenell University, PRI, U. Cal. and Cal. Acad. Sci.

Primary reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42557: authorized by Austin Hendy, entered by Austin Hendy on 02.08.2004

Creative Commons license: CC BY (attribution)