& Nature Photo Galleries
1917 Print from a Painting by Charles R. Knight [15]
Restored from a Skeleton in the American Museum [14]
Leg Bones Drawing [11]
Left - fore leg
Right - hind leg
Skull Drawing [10]
By Ghedoghedo [12],
via Wikimedia Commons
Skeleton [13]
Hyracotherium vasacciense
Lower Teeth (fossil)
1838 Fd. location Unknown, USA
________________________
[3]
Scott, William, A History of Land Mammals in the Western Hemisphere, (New York: The MacMillian Co., 1913), 302
[4] Bennet, Deb, The
Evolution of the Horse: History and Techniques of Study, 2008, 14
[6] Ibid.
[7] Ibid.
[8]
Osborn, Henry, The Age of Mammals in Europe, Asia and North America, (New York: The MacMillian Co., 1921), 555
[10]
Scott, 305
[11] Ibid. 307
[13] At Musee d'Histoire
Naturelle, Paris
[14] Scott, 303
[15] Courtesy of the American Museum of Natural History, New York
[16] Owen, Richard, A History of
British Fossil Mammals and Birds, (London: John Van Voorst, 1846), 419, 422
[17] Granger, Walter, Article XV - A Revision of the American
Eocene Horses, (American Museum of Natural History,1908), 241 [18] Ibid. 260
[19] Osborn, Henry, The Age of Mammals in Europe, Asia
and North America, (New York: The MacMillian Co., 1921), 116
Upper and Lower Teeth Drawing [5]
Eohippus resartus
Upper Right to Left P2 to M3
Lower Right to Left p3 to m3
Fd. Big Horn Basin, Wyoming, USA
Upper
Lower
Upper Teeth Drawing [16]
Eohippus venticolus
Left to Right P2 to M3
Copyright 2018 All rights reserved.
Skull [16]
Hyracotherium leporinum
Fd. in London Clay at Studd Hill about one mile west of Herne Bay, England circa 1839
Skull [19]
Hyracotherium (Pliolophus) vulpiceps
Fd. London Clay, England
Upper Teeth (fossil)
Sifrhippus Sandrae?
M2 and M3?
1845 Fd. Big Horn Basin on surface of Willwood formation near Worland,Wyoming, USA
Hyracotherium (Eohippus)
Size |
Averaged 2.5 feet long [1], about two feet high at the shoulder [2], ranging in size from a cat to a fox [3] |
Eye sockets |
Incomplete
bony rim, about 0.46 of skull length from front of skull to center of socket |
Type of teeth |
Low crowned, enamel over dentine [4],
five grinding teeth [5] |
Toes |
Four on each foreleg and three on each hindleg [6] |
Hooves/pads |
Each toe had a pad like a dog[7] |
Locations found |
Europe [8] , including England, and Colorado, Utah and Wyoming, USA |
Other |
Back very arched upward
Eighteen
rib pairs from the photo below
Small diastema (gap) near front of mouth [9]
Dental formula 3.1.4.3/3.1.4.3 |
Hyracotherum (Eohippus)