Where: Darke County, Ohio (40.2° N, 84.7° W: paleocoordinates 40.2° N, 84.7° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Late/Upper Pleistocene (0.1 - 0.0 Ma)
• "A date of 12,190 +/- 215 years B. P. was determined" for a "wood fragment (Picea)"
• group of beds-level stratigraphic resolution
Environment/lithology: mire or swamp; poorly lithified marl
Size classes: macrofossils, mesofossils
Collected by L. Carter, R. S. Mills in 1966, 1973
Collection methods: bulk, salvage, quarrying, sieve,
• 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"
Primary reference: 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]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 93208: authorized by John Alroy, entered by John Alroy on 07.01.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pinopsida | |
Picea sp. Dietrich 1824 spruce | |
Gastropoda | |
Stagnicola lanceata snail
Fossaria sp. Westerlund 1885 snail | |
Physa cf. heterostropha snail | |
Valvata tricarinata snail | |
Amnicola sp. Gould and Haldeman 1841 snail | |
Bivalvia | |
Sphaerium sp. Scopoli 1777 fingernail clam | |
Mammalia | |
Megalonyx jeffersonii Desmarest 1822 Jefferson's ground sloth | |
Odocoileus virginianus Zimmermann 1780 white-tailed deer | |
Ondatra zibethicus Linnaeus 1766 muskrat | |
Castor canadensis Kuhl 1820 American beaver |