. OneToe. Splints of 2nd and 4th digits OneToe Splints of 2nd and 4th digits Protohippus Mesohippus Protorohippus Hjnrac other ium (Eohippus) Three Toes Side toes not touching the ground I Three Toes Side toes not touching the ground Long- Crowned, Cement- covered Hj Three Toes II Side toes /y\ touching the ground; Splint o/5th digit Three Toes Side toes touching the ground Four Toes Short- Crowned, without Cement Four Toes Splint of 1st digit Three Toes Splint of 5th digit Fig. 38. Comparative drawings of skulls, feet, and teeth of prehistoric horses, showing evolutionary development. Reprodu
. OneToe. Splints of 2nd and 4th digits OneToe Splints of 2nd and 4th digits Protohippus Mesohippus Protorohippus Hjnrac other ium (Eohippus) Three Toes Side toes not touching the ground I Three Toes Side toes not touching the ground Long- Crowned, Cement- covered Hj Three Toes II Side toes /y\ touching the ground; Splint o/5th digit Three Toes Side toes touching the ground Four Toes Short- Crowned, without Cement Four Toes Splint of 1st digit Three Toes Splint of 5th digit Fig. 38. Comparative drawings of skulls, feet, and teeth of prehistoric horses, showing evolutionary development. Reproduced, by permission, from "Origin and History of the Horse," by II. F. Osborn type,^ he became extinct for some reason, and, so far as we know, before he was ever domesticated. What caused this extinction here and yet preser\ed the Asiatic form till man came upon the earth we cannot, with our present knowledge, even conjecture; though it is known that the 1 He had reached the size of the Shetland pony with three toes, only one of which rested firmly on the ground, digits II and IV being much like the "dew claws" (digits II and V) of pigs ; digits I and V being represented by "splints" (digits numbered I-V beginning on the inside).
Size: 2302px × 2170px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordavenpor, bookcentury1900, bookdecade1910, bookyear1910
