Alum Bluff (Miocene of the United States)
Where: Liberty County, Florida (30.2° N, 84.9° W: paleocoordinates 30.5° N, 82.0° W)
• coordinate based on political unit
When: "Fort Preston sand" Formation, Miocene (23.0 - 5.3 Ma)
Environment/lithology: terrestrial
Primary reference: J. D. Bryant, B. J. MacFadden, and P. A. Mueller. 1992. Improved chronologic resolution of the Hawthorn and the Alum Bluff Groups in northern Florida: Implications for Miocene chronostratigraphy. Geological Society America Bulletin 104(2):208-218 [J. Alroy/J. Alroy/P. Wagner]more details
PaleoDB collection 18503: authorized by John Alroy, entered by John Alroy on 27.07.1994, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
• replaces list of Olsen 1964
underlying horizon in same section dated at 18.3, 18.4, 18.6, and 18.9 +/- 1.0 Ma (Sr isotope) - average is 18.55 Ma; diagenesis is considered to be minimal
underlying horizon in same section dated at 18.3, 18.4, 18.6, and 18.9 +/- 1.0 Ma (Sr isotope) - average is 18.55 Ma; diagenesis is considered to be minimal
Show authors, comments, and common names
Mammalia | |
"Merychippus" gunteri Simpson 1930 horse | |
Rhinocerotidae indet. Gray 1821 rhinoceros | |
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Echinoidea | |
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