Mixson's Bone Bed (Neogene of the United States)

Where: Levy County, Florida (29.4° N, 82.6° W: paleocoordinates 29.6° N, 80.9° W)

• coordinate based on political unit

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Primary reference: G. G. Simpson. 1930. Tertiary Land Mammals of Florida. Bulletin of the American Museum of Natural History 59(3):1-64 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18563: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Richard Hulbert

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Panemydidae
"Chrysemys caelata n. sp." = Pseudemys caelata4, Deirochelys sp.4
"Chrysemys caelata n. sp." = Pseudemys caelata4 Hay 1908 turtle
Pseudemys caelata type of Hay 1908 from "Mason's bone bed"
Deirochelys sp.4 Agassiz 1857 chicken turtle
part of Hay's P. caelata series
Mammalia
 Perissodactyla - Rhinocerotidae
Teleoceras proterum Leidy 1885 rhinoceros
see Prothero and Manning 1987
Aphelops malacorhinus1 Cope 1878 rhinoceros
 Perissodactyla - Tapiridae
Tapirus webbi2 Hulbert 2005 tapir
 Perissodactyla - Equidae
"Hippotherium plicatile" = Cormohipparion plicatile1 Leidy 1887 hipparionine horse
"Hippotherium ingenuum" = Cormohipparion ingenuum1 Leidy 1885 hipparionine horse
Nannippus westoni3 Simpson 1930 hipparionine horse
Protohippus gidleyi3 Hulbert 1988 horse
Calippus hondurensis3 Olson and McGrew 1941 horse
 Carnivora - Canidae
Epicyon haydeni6 Leidy 1858 bone-crushing dog
Borophagus pugnator6 Cook 1922 bone-crushing dog
 Xenarthra - Mylodontidae
Thinobadistes segnis n. sp.8 Hay 1919 edentate
 Proboscidea - Gomphotheriidae
Amebelodon sp.5 Barbour 1927 gomphothere
may include "Serridentinus floridanus" and "S. leidii"
 Ungulata - Camelidae
Camelidae indet.1 Gray 1821 camel
Aepycamelus major1 Leidy 1886 camel
Hemiauchenia minima1 Leidy 1886 camel
 Ungulata - Palaeomerycidae
"Pediomeryx cf. hamiltoni" = Yumaceras hamiltoni7
"Pediomeryx cf. hamiltoni" = Yumaceras hamiltoni7 Webb 1983 ruminant