Gatun Locks [middle Gatun Fm]: Tortonian, Panama
collected by Brown 1909
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Gastropoda
- Neogastropoda
- Cancellariidae
|
|||||||
|
Cancellaria decaptyx
Brown and Pilsbry 1911
|
|||||||
| recombined as Narona decaptyx | |||||||
| see common names | |||||||
Geography
| Country: | Panama |
| 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 |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Tortonian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Tortonian | ||
| Age range of interval: | 11.63000 - 7.24600 m.y. ago | ||
| Age estimate: | 9.9 Ma (other) |
Stratigraphy
| 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 Sr dating for nearby sections indicates an age of approximately 9.9 Ma (Hendy, unpublished data).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). | |
Taphonomy
| 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. | |||
Metadata
| 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] |