Moss Acres Racetrack (Neogene of the United States)

Where: Marion County, Florida (29.1° N, 82.3° W: paleocoordinates 29.3° N, 80.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Alachua Formation, Hemphillian (10.3 - 4.9 Ma)

• bed-level stratigraphic resolution

Environment/lithology: pond; claystone

• "fluvially isolated, permanent pond"
• "fine-grained, virtually pure clay... 80% illite and 20% kaolinite, and contains numerous fine silica grains and isolated pockets of peat"

Size class: macrofossils

Primary reference: R. C. Hulbert, Jr. 1988. Calippus and Protohippus (Mammalia, Perissodactyla, Equidae) from the Miocene (Barstovian-early Hemphillian) of the Gulf Coastal Plain. Bulletin of the Florida State Museum, Biological Sciences 32(3):221-340 [J. Alroy/J. Alroy/R. Hulbert]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 18564: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• "cf. Procamelus sp." is omitted by Lambert 1997
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.5 Agassiz 1843 gar
Reptilia
 Testudines - Trionychidae
Apalone sp.5 Rafinesque 1832 softshell turtle
 Testudines - Panemydidae
Trachemys sp.5 Agassiz 1857 slider
Pseudemys sp.5 Gray 1856 cooter
Aves
 Anseriformes - Anatidae
Anatidae indet.5 Vigors 1825 waterfowl
Reptilia
 Crocodylia - Alligatoridae
Alligator mississippiensis7 Daudin 1801 American alligator
Mammalia
 Perissodactyla - Rhinocerotidae
Aphelops mutilus Matthew 1924 rhinoceros
 Perissodactyla - Equidae
"Hippotherium emsliei" = Cormohipparion emsliei2 Hulbert 1988 hipparionine horse
"Hippotherium plicatile" = Cormohipparion plicatile1 Leidy 1887 hipparionine horse
Nannippus aztecus1 Mooser 1968 hipparionine horse
Nannippus morgani3 Hulbert 1993 hipparionine horse
N. sp. "3" of Hulbert 1988c
Neohipparion trampasense5 Edwards 1982 hipparionine horse
Hipparion cf. tehonense Merriam 1916 hipparionine horse
Dinohippus sp. Quinn 1955 horse
cf. Astrohippus sp.5 Stirton 1940 horse
Calippus maccartyi Hulbert 1988 horse
 Carnivora - Mustelidae
Enhydritherium terraenovae6 Berta and Morgan 1985 badger
 Carnivora - Canidae
Borophagus orc5 Webb 1969 bone-crushing dog
 Xenarthra - Megalonychidae
Pliometanastes protistus Hirschfeld and Webb 1968 edentate
 Proboscidea - Gomphotheriidae
Amebelodon (Konobelodon) britti n. sp.4 Lambert 1990 gomphothere
 Ungulata - Tayassuidae
Tayassuidae indet. Palmer 1897 peccary
 Ungulata - Camelidae
Aepycamelus sp. Macdonald 1956 camel
Hemiauchenia minima Leidy 1886 camel
 Ungulata -
 Ungulata - Palaeomerycidae
Pediomeryx hemphillensis5 Stirton 1936 ruminant
 Ungulata - Antilocapridae
Antilocapridae indet.5 Gray 1866 pronghorn