Swift Mine: Late/Upper Hemphillian, Florida

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Perissodactyla - Equidae
Dinohippus mexicanus (Lance 1950)
MacFadden 1986
original and current combination Pliohippus (Pliohippus) mexicanus
Astrohippus stockii (Lance 1950)
MacFadden 1986
original and current combination Pliohippus (Astrohippus) stockii
Mammalia - Antilocapridae
Hexameryx simpsoni White 1941
Webb 1973
Antilocapra garciae n. sp. Webb 1973
Webb 1973
    = Sphenophalos garciae Webb 1973
Alroy 2002
Mammalia - Tayassuidae
Catagonus brachydontus (Dalquest and Mooser 1980)
Wright 1989
recombined as Protherohyus brachydontus
Mammalia - Carnivora - Odobenidae
Trichecodon huxleyi Lankester 1865
Morgan 1994
synonym of Ontocetus emmonsi
Mammalia - Carnivora - Canidae
Borophagus hilli (Johnston 1939)
Reptilia - Testudines
Chelonia sp. (Latreille 1800)
Dodd and Morgan 1992
synonym of Testudines
see common names

Geography
Country:United States State/province:Florida County:Polk
Coordinates: 27.9° North, 81.8° West (view map)
Paleocoordinates:28.1° North, 80.1° West
Basis of coordinate:based on political unit
Time
Period:Neogene
10 m.y. bin:Cenozoic 6
*Period:Tertiary *Epoch:Miocene
Key time interval:Late/Upper Hemphillian
Age range of interval:9.40000 - 4.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Hawthorn Formation:Peace River Member:Bone Valley
Stratigraphy comments: Latest Hemphillian, Palmetto Fauna; Morgan (1994) lists the age as latest Hemphillian (Zanclean, early Pliocene); upper beds

JA: changed to Zanclean by Pyenson (?), but the primary temporal information is the "Hemphillian" age assignment and the AEO data are inconsistent with a Pliocene age
Lithology and environment
Primary lithology: "carbonate"
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:C. cerasinus reported by Hulbert 1988a: site may be diachronous
Metadata
Database number:18595
Authorizer:J. Alroy, M. Uhen Enterer:J. Alroy, N. Pyenson
Modifier:M. Carrano Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2018-02-05 15:52:20
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3558. X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
739 C. K. Dodd, Jr. and G. S. Morgan. 1992. Fossil sea turtles from the early Pliocene Bone Valley Formation, central Florida. Journal of Herpetology 26(1):1-8 [J. Alroy/M. Sommers/M. Uhen]
3851 B. J. MacFadden. 1986. Fossil horses from "Eohippus" (Hyracotherium) to Equus; scaling, Cope's law, and the evolution of body size. Paleobiology 12(4):355-369 [J. Alroy/M. Sommers]
17249 B. J. MacFadden. 1986. Late Hemphillian monodactyl horses (Mammalia, Equidae) from the Bone Valley Formation of Central Florida. Journal of Paleontology 60(2):466-475 [M. Uhen/M. Uhen/J. Alroy]
2613 G. S. Morgan. 1994. Miocene and Pliocene marine mammal faunas from the Bone Valley Formation of central Florida. Contributions in Marine Mammal Paleontology Honoring Frank C. Whitmore Jr., Proceedings of the San Diego Society of Natural History 29:239-268 [J. Alroy/J. Alroy/M. Uhen]
3566 S. D. Webb. 1973. Pliocene Pronghorns of Florida. Journal of Mammalogy 54(1):203-221 [J. Alroy/J. Alroy/M. Uhen]
3774 D. B. Wright. 1989. Phylogenetic relationships of Catagonus wagneri: sister taxa from the Tertiary of North America. Advances in Neotropical Mammalogy 281-308 [J. Alroy/J. Alroy/M. Uhen]