Location 42f, Gatun Lake area (Bohio Formation) - Woodring (1957): Late Oligocene, Panama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Thiaridae
c category
Woodring (1959) changes this from: H. atriformis (Woodring (1957)
Bivalvia - Lucinida - Lucinidae
Miltha sp. (Adams and Adams 1857)
Woodring 1982 r category
Bivalvia - Cardiida - Solecurtidae
Woodring 1982 c category
Bivalvia - Cardiida - Psammobiidae
Woodring 1982 c category
Subspecies: Gari (Gobraeus) listrota hadratera
Bivalvia - Cardiida - Tellinidae
Woodring 1982 r category
Bivalvia - Cardiida - Corbiculidae
Woodring 1982 r category
Bivalvia - Cardiida - Ungulinidae
Woodring 1982 a category
Bivalvia - Cardiida - Veneridae
Woodring 1982 r category
Woodring 1982 a category
Bivalvia - Cardiida - Sphaeriidae
Woodring 1982 r category
Bivalvia - Pholadida - Corbulidae
Woodring 1982 r category
Bivalvia - Ostreida - Ostreidae
Crassostrea cahobasensis (Pilsbry and Brown 1910)
Woodring 1982 r category
see common names

Geography
Country:Panama
Coordinates: 9.2° North, 79.9° West (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Oligocene
Stage: Chattian 10 m.y. bin: Cenozoic 4
Key time interval: Late Oligocene
Age range of interval: 27.3 - 23.04 m.y. ago
Stratigraphy
Formation:Bohio
Stratigraphic resolution:bed
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: lithified wackestone
Includes fossils?Y
Lithology description: Listed as "poorly sorted subgraywacke". Typically, algal limestone and in both poorly sorted and fairly well sorted subgraywacke.
Environment:coastal indet.
Geology comments: No paleoenvironmentald data reported, but given that these collections originate from marine tongues/wedges, they are likely to be shallow water.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collection method comments: 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.
Taxonomic list comments:Exhaustive for gastropoda.
Metadata
Also known as:USGS 18836; field #206
Database number:42557
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-08-02 08:13:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-08-02 08:13:47
Creative Commons license:CC0
Reference information

Primary reference:
11306. 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]

Secondary references:

13359 W. P. Woodring. 1982. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (Pelecypods: Propeamussiidae to Cuspidariidae). United States Geological Survey Professional Paper 306(F) [A. Miller/A. Hendy/A. Hendy]