Grey Zone Phosphoria Mine (Miocene of the United States)

Where: Polk County, Florida (27.9° N, 81.8° W: paleocoordinates 28.1° N, 79.3° W)

• coordinate based on political unit

When: Bone Valley Member (Peace River Formation), Early/Lower Clarendonian (12.5 - 9.4 Ma)

• lower beds

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; pebbly, phosphatic, argillaceous, sandy sandstone

Size class: macrofossils

Primary reference: R. C. Hulbert, Jr. 1988. Cormohipparion and Hipparion (Mammalia, Perissodactyla, Equidae) from the Late Neogene of Florida. Bulletin of the Florida State Museum, Biological Sciences 33(5):229-338 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18536: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Nick Pyenson and Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

• equids onlyPhosphoria Mine records of unclear stratigraphic origin: Epicyon haydeni Wang et al. 1999 Borophagus pugnator Wang et al. 1999 "Cormohipparion cf. occidentale" Hipparion cf. tehonense Dinohippus mexicanus MacFadden 1986 "Cormohipparion" emsliei Hulbert 1988b
Show authors, comments, and common names
Mammalia
 Sirenia - Dugongidae
Metaxytherium floridanum2
Metaxytherium floridanum2 Hay 1922 dugong
 Perissodactyla - Equidae
"Hippotherium ingenuum" = Cormohipparion ingenuum1, Pseudhipparion curtivallum, Nannippus sp., Protohippus supremus, Calippus sp., Calippus martini
"Hippotherium ingenuum" = Cormohipparion ingenuum1 Leidy 1885 hipparionine horse
Pseudhipparion curtivallum Quinn 1955 hipparionine horse
Nannippus sp. Matthew 1926 hipparionine horse
"A"
Protohippus supremus Leidy 1869 horse
Calippus sp. Matthew and Stirton 1930 horse
Calippus martini Hesse 1936 horse
 Cetacea - Ziphiidae
Ziphiidae indet.3
Ziphiidae indet.3 Gray 1850 beaked whale
1Alroy 2002; 2Domning 1988; 3Morgan 1994