Location 12a, Madden Basin [Gatuncillo Formation]: Late Eocene, Panama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Gastropoda
- Neritidae
|
|||||||
|
Velates perversus
(Gmelin 1791)
|
R category | ||||||
| see common names | |||||||
Geography
| Country: | Panama |
| Coordinates: | 9.2° North, 79.6° West (view map) |
| Paleocoordinates: | |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Late Eocene | ||
| Age range of interval: | 37.71 - 33.9 m.y. ago |
Stratigraphy
| Formation: | Gatuncillo | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONSHIPS: In Madden basin, the Gatuncillo Formation is overlain by Caimato Formation and overlies Cretaceous basement. AGE: Middle-Late Eocene; here assigned to Late Eocene. STRATIGRAPHIC POSITION: From limestone facies (upper part of Gatuncillo Fm - A. Hendy, pers. comm., 2009). | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: LITHOLOGY: Algal or algal-foraminiferal limestones dominate the upper part of the formation. Other facies include echinoid bearing limestones, soft and coralliferous limestones. LITHIFICATION: Lithified, on the basis of figured specimens and outcrop observations. | |
| Environment: | carbonate indet. |
| Geology comments: Carbonate facies, including algal and coral-rich limestones. No further paleoenvironmental data. | |
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: | USNM |
| Collection method comments: COLLECTOR: L. Jolly, 1974. REPOSITORY: USNM. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropods and bivalves. NOMENCLATURE: Authoritative publication, with relatively modern nomenclature, and species-resolution identifications. | |
Metadata
| Also known as: | USGS 25712 | ||
| Database number: | 92978 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-12-20 13:48:06 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2009-12-20 13:48:06 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 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] |