Moss Acres Racetrack (Neogene of the United States)

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

• Paleocoordinates: 30.4° N, 79.2° W (Wright 2013)

• 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: CC0 (CC0)

Taxonomic list

• "cf. Procamelus sp." is omitted by Lambert 1997
Show authors, comments, and common names
Aves
 Anseriformes - Anatidae
Anatidae indet.5
Anatidae indet.5 Vigors 1825 waterfowl
Reptilia
 Crocodylia - Alligatoridae
Alligator cf. mefferdi7
Alligator cf. mefferdi7 Mook 1946 alligator
 Testudines - Trionychidae
Apalone sp.5
Apalone sp.5 Rafinesque 1832 softshell turtle
 Testudines - Emydidae
Pseudemys sp.5, Trachemys sp.5
Pseudemys sp.5 Gray 1856 cooter
Trachemys sp.5 Agassiz 1857 slider
Mammalia
 Carnivora - Mustelidae
Enhydritherium terraenovae6
Enhydritherium terraenovae6 Berta and Morgan 1985 otter
 Carnivora - Canidae
Borophagus orc5
Borophagus orc5 Webb 1969 bone-crushing dog
 Perissodactyla - Equidae
Hipparion cf. tehonense, "Hippotherium emsliei" = Cormohipparion emsliei2, "Hippotherium plicatile" = Cormohipparion plicatile1, Neohipparion trampasense5, Nannippus morgani3, Nannippus aztecus1, Calippus maccartyi, cf. Astrohippus sp.5, Dinohippus sp.
Hipparion cf. tehonense Merriam 1916 hipparionine horse
"Hippotherium emsliei" = Cormohipparion emsliei2 Hulbert 1988 hipparionine horse
"Hippotherium plicatile" = Cormohipparion plicatile1 Leidy 1887 hipparionine horse
Neohipparion trampasense5 Edwards 1982 hipparionine horse
Nannippus morgani3 Hulbert 1993 hipparionine horse
N. sp. "3" of Hulbert 1988c
Nannippus aztecus1 Mooser 1968 hipparionine horse
Calippus maccartyi Hulbert 1988 horse
cf. Astrohippus sp.5 Stirton 1940 horse
Dinohippus sp. Quinn 1955 horse
 Perissodactyla - Rhinocerotidae
Aphelops mutilus
Aphelops mutilus Matthew 1924 rhinoceros
 Artiodactyla - Tayassuidae
Tayassuidae indet.
Tayassuidae indet. Palmer 1897 peccary
 Artiodactyla -
Ruminantia indet.1
 Artiodactyla - Antilocapridae
Antilocapridae indet.5
Antilocapridae indet.5 Gray 1866 pronghorn
 Artiodactyla - Dromomerycidae
Pediomeryx hemphillensis5
Pediomeryx hemphillensis5 Stirton 1936 ruminant
 Artiodactyla - Camelidae
Hemiauchenia minima, Aepycamelus sp.
Hemiauchenia minima Leidy 1886 camel
Aepycamelus sp. Macdonald 1956 camel
 Proboscidea - Gomphotheriidae
"Amebelodon (Konobelodon) britti n. sp." = Konobelodon britti4
"Amebelodon (Konobelodon) britti n. sp." = Konobelodon britti4 Lambert 1990 gomphothere
 Megatherioidea - Megalonychidae
Pliometanastes protistus
Pliometanastes protistus Hirschfeld and Webb 1968 edentate
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp.5
Lepisosteus sp.5 Agassiz 1843 gar
1Alroy 2002; 2Hulbert 1988; 3Hulbert 1993; 4Lambert 1990; 5Lambert 1997; 6Morgan 1994; 7Stout 2020