Location 54k, Gatun Lake area (Caimito Formation) - Woodring (1957): Late Oligocene, Panama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Woodring 1973 c category
Woodring 1973 a category
Bivalvia - Nuculida - Nuculidae
Woodring 1973 f category
Subspecies: Acila (Acila) isthmica isthmica
Bivalvia - Nuculanida - Nuculanidae
Woodring 1973 c category
Saccella cf. subcerata (Woodring 1925)
Woodring 1973 r category
Bivalvia - Lucinida - Lucinidae
Woodring 1982 r category
Woodring 1982 c category
Bivalvia - Cardiida - Cardiidae
Woodring 1982 f category
Bivalvia - Cardiida - Tellinidae
Woodring 1982 r category
Gastropoda - Naticidae
? Polinices sp. Monfort 1810
Gastropoda - Neogastropoda - Terebridae
Strioterebrum sp. Sacco 1891
Woodring 1970 r category
Gastropoda - Neogastropoda - Turridae
Turridae indet. Swainson 1840
Woodring 1970 r category
Gastropoda - Neogastropoda - Borsoniidae
Woodring 1970 r category
Gastropoda - Heterostropha - Architectonicidae
Architectonica sp. Röding 1798
Woodring 1959 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:Caimito Member:Middle
Local section:Barro Colorado Island
Regional section:Gatun Lake
Stratigraphic resolution:bed
Stratigraphy comments: From middle member. Three members of the Caimito Formation are recognized in the Gatun Lake area: lower, middle, and upper. The lower member is predominantly conglomerate and tuffaceous sandstone; the middle member consists of tuffaceous sandstone; the upper member comprises tuff and tuffaceous siltstone. The thickness of the Caimito Formation in the Gatun Lake area is around 300 m or more. Larger foraminifera support a late Oligocene age; corals favor a late Oligocene age, although early Miocene is unlikely; molluscs also confirm an Oligocene age.
Lithology and environment
Primary lithology: poorly lithified sandstone
Includes fossils?Y
Lithology description: Soft sandstone.
Environment:coastal indet.
Geology comments: No paleoenvironmentald data reported.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,microfossils
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 18834; field #204a
Database number:42572
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2004-08-02 12:28:20 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-08-02 12:28:20
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:

11372 W. P. Woodring. 1959. Geology and paleontology of Canal Zone and adjoining parts of Panama: Description of Tertiary mollusks (gastropods: Vermetidae to Thaididae). United States Geological Survey Professional Paper 306(B):147-239 [A. Miller/A. Hendy/A. Hendy]
13236 W. P. Woodring. 1970. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (gastropods: Eulimidae, Marginellidae to Helminthoglyptidae). United States Geological Survey Professional Paper 306(D):299-452 [A. Miller/A. Hendy/A. Hendy]
13235 W. P. Woodring. 1973. Geology and paleontology of canal zone and adjoing parts of Panama: Description of Tertiary mollusks (additions to gastropods, scaphopods, pelecypods: Nuculidae to Malleidae). United States Geological Survey Professional Paper 306(E):453-539 [A. Miller/A. Hendy/A. Hendy]
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]