Protohippus
Protohippus sp., upper teeth, crown view
Leg Bones [9]
A - right manus; B - left pes
Skull [8]
Upper Teeth [11]
Protohippus sp.
Left to right - M3, M2, M1, P4, P3, P2
Grinding surface
Skeleton (fossil) [7]
Protohippus simus
Upper Teeth[10]
Protohippus or Pliohippus?
Fd. Mohave Desert, California, USA
21423
21423
21424
A
B
Photo by R. Weller/ Cochise College
________________________
[2] Scott, William, A History of Land Mammals in the Western
Hemisphere, (New York: The MacMillian Co., 1913), 305
[4] Bennet, Deb, The Evolution of
the Horse: History and Techniques of Study, 2008, 42
[5] Osborn, Henry, The Age of Mammals in Europe, Asia and North America, (New
York: The MacMillian Co., 1921), 297
[6] Ibid.
[7] Photo taken at the New York Museum of Natural History
[8] Scott, William, A History
of Land Mammals in the Western Hemisphere, (New York: The MacMillian Co., 1913), 305
[9] Ibid. 306
[10] Merriam, John, Tertiary Mammalian
Faunas of the Mohave Desert, (University of California Publications, 1919), 506
[11] Cope, Edward and Matthew, William, Hitherto Unpublished
Plates of Tertiary Mammalia and Permian Vertebrata, (United States Government for the American Museum of Natural History), Plate CXLVIIIa
[12] Ibid.
Lower Teeth[12]
Protohippus labrosus (Cope)
Fd. Pawnee Buttes, Colorado, USA
Copyright 2018 All rights reserved.
Perissodactyla/Equidae/Equinae
|
Size |
Roughly the size of a modern donkey [1] |
|
Eye sockets |
Complete bony rim [2], about 0.66 of skull length from front of skull to center of socket |
|
Type of teeth |
High crowned |
|
Toes |
Three toes per leg [3] |
|
Hooves/pads |
Each toe tipped with hooflet [4] |
|
Locations found |
North America [5] |
|
Other |
Found side by side with Merychippus, Parahippus, Hypohippus and Hipparion [6] |
Protohippus