Gatun Locks [middle Gatun Fm]: Tortonian, Panama
collected by Brown 1909

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria decaptyx Brown and Pilsbry 1911
recombined as Narona decaptyx
see common names

Coordinates: 9.3° North, 79.9° West (view map)
Paleocoordinates:9.0° North, 78.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Period:Neogene Epoch:Miocene
Stage:Tortonian 10 m.y. bin:Cenozoic 6
Key time interval:Tortonian
Age range of interval:11.62000 - 7.24600 m.y. ago
Age estimate:9.9 Ma (other)
Formation:Gatun Member:middle Gatun
Stratigraphic resolution:member
Stratigraphy comments: LITHOSTRATIGRAPHY: From the Gatun Formation, which unconformably overlies either volcanic basement of Caimito Formation (late Oligocene), and is unconformably overlain by the Chagres Formation. AGE: Late Miocene; constrained by biostratigraphy of multiple groups (foraminifera, nannoplankton); refined by enterer to Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 9.9 Ma (Hendy, unpublished data). STRATIGRAPHIC POSITION: Probably from top of middle member (enterer's opinion).
Lithology and environment
Primary lithology: "siliciclastic"
Includes fossils?Y
Lithology description: LITHIFICATION: Unknown. LITHOLOGY: No lithologic data provided, but assumed to be siliciclastic.
Environment:coastal indet.
Geology comments: No paleoenvironmental data provided, but assumed to be from shallow marine facies (enterer's opinion).
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:ANSP
Collectors:Brown Collection dates:1909
Collection method comments: COLLECTOR: Brown, A. REPOSITORY: ANSP, Philadelphia.
Taxonomic list comments:NOMENCLATURE: Authoritative publication, with species-resolution identifications, but with antiquated nomenclature. COVERAGE: Exhaustive for mollusks.
Database number:135886
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2012-11-12 04:10:31 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2014-11-12 04:10:31
Creative Commons license:CC BY
Reference information

Primary reference:

31572. A. P. Brown and H. A. Pilsbry. 1911. Fauna of the Gatun Formation, Isthmus of Panama. Proceedings of the Academy of Natural Sciencesof Philadelphia 63(2):336-373 [A. Hendy/A. Hendy]