Darke County Megalonyx Site: Late/Upper Pleistocene, Ohio
collected by L. Carter, R. S. Mills 1966, 1973
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Acella haldermani
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2 specimens | |||||||||
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Meomphix sp.
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2 specimens | |||||||||
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Mammalia
- Megalonychidae
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Megalonyx jeffersonii
(Desmarest 1822)
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| (3 measurements) | ||||||||||
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Mammalia
- Rodentia
- Cricetidae
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Ondatra zibethicus
(Linnaeus 1766)
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Mammalia
- Rodentia
- Castoridae
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Castor canadensis
Kuhl 1820
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Mammalia
- Cervidae
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Odocoileus virginianus
(Zimmermann 1780)
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Bivalvia
- Cardiida
- Sphaeriidae
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Sphaerium sp.
Scopoli 1777
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112 specimens | |||||||||
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Gastropoda
- Heterostropha
- Physidae
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Physa cf. heterostropha
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25 specimens | |||||||||
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Gastropoda
- Heterostropha
- Planorbidae
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Promenetus exacuous
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37 specimens | |||||||||
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Gyraulus parvus
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42 specimens | |||||||||
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Gyraulus deflectus
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15 specimens | |||||||||
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Helisoma anceps
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70 specimens | |||||||||
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Gastropoda
- Heterostropha
- Lymnaeidae
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Fossaria sp.
Westerlund 1885
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2 specimens | |||||||||
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Stagnicola lanceata
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11 specimens | |||||||||
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Gastropoda
- Heterostropha
- Valvatidae
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Valvata tricarinata
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104 specimens | |||||||||
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Gastropoda
- Amnicolidae
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Amnicola sp.
Gould and Haldeman 1841
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77 specimens | |||||||||
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Pinopsida
- Pinales
- Pinaceae
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Picea sp.
Dietrich 1824
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Ohio | County: | Darke |
| Coordinates: | 40.2° North, 84.7° West (view map) | ||||
| Paleocoordinates: | 40.2° North, 84.7° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late/Upper Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pleistocene | ||
| Age range of interval: | 0.12900 - 0.01170 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "A date of 12,190 +/- 215 years B. P. was determined" for a "wood fragment (Picea)" | |||||
Lithology and environment
| Primary lithology: | poorly lithified marl |
| Lithology description: "dredged up chunks of marl" | |
| Environment: | mire/swamp |
| Glacial or sequence phase: | late glacial |
| Geology comments: from "one of the kettle bogs" on the property | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | bulk,salvage,selective quarrying,sieve,field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Collectors: | L. Carter, R. S. Mills | Collection dates: | 1966, 1973 |
| Collection method comments: Dayton Museum of Natural History collection
after the initial discovery "Museum personnel and volunteers dug through dredged up marl using hand tools" and a "3783 c.c. sample of marl was analyzed for mollusc shells" | |||
Metadata
| Database number: | 93208 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
| Created: | 2010-01-07 19:31:37 | Last modified: | 2010-01-07 21:31:37 |
| Access level: | the public | Released: | 2010-01-07 19:31:36 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 31502. | R. S. Mills. 1975. A ground sloth, Megalonyx, from a Pleistocene site in Darke Co, Ohio. Ohio Journal of Science 75(3):147-155 [J. Alroy/J. Alroy] |