Locality 206 - Chagres Sandstone: Messinian, Panama
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium (Fissidentalium) grandanum
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Subspecies: D. (F.) grandanum esmeraldum | ||||||||||
Gastropoda
- Trochidae
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Calliostoma metalium
Woodring 1957
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Gastropoda
- Epitoniidae
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Scalina ? eigandi
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R category | |||||||||
"Epitonium" sp.
Bolten 1798
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R category | |||||||||
Bivalvia
- Nuculanida
- Nuculanidae
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Saccella cf. ornata
(d'Orbigny 1845)
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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 | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
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Cryptopecten cactaceus
(Dall 1898)
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Woodring 1982 | A | ||||||||
recombined as Chagrepecten cactaceus | ||||||||||
Amusium mimyum
Woodring 1982
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Woodring 1982 | C | ||||||||
Bivalvia
- Ostreida
- Pinnidae
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Atrina (Servatrina) aff. serrata
(Sowerby 1825)
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Bivalvia
- Cardiida
- Tellinidae
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Tellina (Angulus) cf. umbra
(Dall 1900)
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Woodring 1982 | F | ||||||||
recombined as Angulus umbra | ||||||||||
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 A.A. Olsson and G.M. Bevier (1918). 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: | USGS #16937 | ||
Database number: | 60699 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Collections that are a subset of this one: | |||
Created: | 2006-05-20 22:55:29 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2006-05-20 22:55:29 |
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] |