Locality 206a - Chagres Sandstone: Messinian, Panama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Epitoniidae
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Scalina ? eigandi
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R category | |||||||||
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Gastropoda
- Trochidae
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Calliostoma metalium
Woodring 1957
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Bivalvia
- Nuculida
- Nuculidae
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Acila (Acila) isthmica
(Brown and Pilsbry 1911)
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| Subspecies: A. (A.) isthmica isthmica | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Cryptopecten cactaceus
(Dall 1898)
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Woodring 1982 | F category | ||||||||
| recombined as Chagrepecten cactaceus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Panama |
| Coordinates: | 9.3° North, 80.0° West (view map) |
| Paleocoordinates: | 9.1° North, 79.1° West |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Messinian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Messinian | ||
| Age range of interval: | 7.24600 - 5.33300 m.y. ago | ||
| Age estimate: | 6.1 Ma (other) |
Stratigraphy
| Formation: | Chagres Sandstone | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Chagres Sandstone overlies and partly overlaps the Gatun Fm. Calcareous strata at the base of the formation throughout most of the outcrop area in the Canal Zone constitutes the Toro Limestone Mbr. The Chagres Sandstone is as much as 1000 ft thick. AGE: Late Miocene (late Tortonian-Messinian) according to Collins and Coates 1999); direct date is midpoint for established age range from microfossil biostratigraphy. | |||||
Lithology and environment
| Primary lithology: | fine poorly lithified sandstone |
| Secondary lithology: | poorly lithified siltstone |
| Includes fossils? | Y |
| Lithology description: Massive, generally fine-grained sandstone and some siltstone. | |
| Environment: | coastal indet. |
| Geology comments: No specific environmental data presented. | |
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: | CAS,PRI,USNM |
| Collection method comments: Collected by W.T. Thompson (1943). Material is also held (but not specified for any specific collection) at Stanford University, Acad. Nat. Sci. Phil., Cornell University, PRI, U. Cal. and Cal. Acad. Sci. | |
| Taxonomic list comments:Exhaustive for gastropoda and bivalvia. | |
Metadata
| Also known as: | Stanford #2699 | ||
| Database number: | 60700 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Subset of collection #: | 60699 | ||
| Created: | 2006-05-20 22:56:32 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-05-20 22:56:32 |
| Creative Commons license: | CC BY | ||
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] |