Dickerson Coquina Pits: Middle Pleistocene, Florida
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Strigiformes
- Strigidae
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Bubo virginianus
(Gmelin 1788)
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1 specimen | |||||||||
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Reptilia
- Gruiformes
- Rallidae
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Fulica americana
Gmelin 1789
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1 specimen | |||||||||
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Rallus elegans
Audubon 1834
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1 specimen | |||||||||
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Reptilia
- Gruiformes
- Gruidae
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Grus sp.
Brisson 1760
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1 specimen | |||||||||
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Reptilia
- Anseriformes
- Anatidae
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Anas sp.
Linnaeus 1758
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4 specimens | |||||||||
| Anas cf. platyrhynchos or rubripes | ||||||||||
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Aythya collaris
(Donovan 1809)
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1 specimen | |||||||||
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Bucephala clangula
(Linnaeus 1758)
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2 specimens | |||||||||
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Reptilia
- Suliformes
- Sulidae
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Morus bassanus
(Linnaeus 1758)
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1 specimen | |||||||||
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Reptilia
- Suliformes
- Phalacrocoracidae
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Phalacrocorax cf. auritus
(Lesson 1831)
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1 specimen | |||||||||
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Reptilia
- Suliformes
- Anhingidae
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Anhinga anhinga
(Linnaeus 1766)
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1 specimen | |||||||||
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Reptilia
- Pelecaniformes
- Threskiornithidae
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Eudocimus albus
(Linnaeus 1758)
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1 specimen | |||||||||
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Reptilia
- Pelecaniformes
- Ardeidae
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Ardea herodias
Linnaeus 1758
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1 specimen | |||||||||
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Nyctanassa violacea
(Linnaeus 1758)
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Reptilia
- Ciconiiformes
- Ciconiidae
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Ciconia maltha
Miller 1910
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1 specimen | |||||||||
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Reptilia
- Diomedeidae
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Phoebastria cf. albatrus
(Pallas 1769)
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1 specimen | |||||||||
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Reptilia
- Charadriiformes
- Alcidae
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Pinguinus impennis
(Linnaeus 1758)
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5 specimens | |||||||||
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Reptilia
- Phasianidae
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Meleagris cf. gallopavo
Linnaeus 1758
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3 specimens | |||||||||
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Mammalia
- Rodentia
- Castoridae
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Castoroides dilophidus
(Martin 1969)
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Hulbert et al. 2014 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Florida | County: | St. Lucie |
| Coordinates: | 27.5° North, 80.5° West (view map) | ||||
| Paleocoordinates: | 27.5° North, 80.5° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Chibanian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Middle Pleistocene | ||
| Age range of interval: | 0.77400 - 0.12900 m.y. ago |
Stratigraphy
| Formation: | Okeechobee | ||||
| Stratigraphy comments: The vertebrate fossil layer at DCP lies just below the Anastasia Formation and was the lowest stratum regularly exposed above water. While its lower boundary was not measured, this layer was only a few meters thick (Herrera et al., 2006). Electron spin resonance optical dating has confirmed these suspicions; a sample of siliciclastic sediments from just above the vertebrate fossil layer, at a depth of 11.5 m, was dated at 730-430 ka (0.73-0.43 Ma; Burdette et al., 2013). Strata below the vertebrate fossil layer occasionally were exposed at DCP. Petuch (2004) measured some sections and believed that these lower layers corresponded to the late Pliocene to early Pleistocene Nashua ‘formation.’ Burdette et al. (2013) dated a sample from those low layers (depth 14 m) at 1.37-0.61 Ma. If these age assessments are correct, then the fossil layer is certainly older than typical facies of the Anastasia Formation and should be included in Scott’s Okeechobee Formation. |
Lithology and environment
| Primary lithology: | unlithified sandstone |
| Environment: | mire/swamp |
| Geology comments: A drowned tidal creek or marsh covered during an interglacial marine transgression, perhaps during the high sea level stand of 10+ m at ca. 400 ka (Marine Isotope Stage 11) | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 195048 | ||
| Authorizer: | M. Clapham, M. Uhen | Enterer: | M. Clapham, M. Uhen | Research group: | vertebrate |
| Created: | 2018-07-14 10:11:28 | Last modified: | 2018-07-14 10:11:28 |
| Access level: | the public | Released: | 2018-07-14 10:11:28 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 66317. | J. A. Kilmer and D. W. Steadman. 2016. A middle Pleistocene bird community from Saint Lucie County, Florida. Bulletin of the Florida Museum of Natural History 55:1-38 [M. Clapham/M. Clapham] |
Secondary references:
| 74663 | R. C. Hulbert, A. Kerner, and G. S. Morgan. 2014. Taxonomy of the Pleistocene giant beaver Castoroides (Rodentia: Castoridae) from the southeastern United States. 53(2):26-43 [M. Uhen/M. Uhen] |