Skulls Of Some Ancestors Of The Horse
Description
This section is from the book "The Horse - Its Treatment In Health And Disease", by J. Wortley Axe. Also available from Amazon: The Horse. Its Treatment In Health And Disease.
Skulls Of Some Ancestors Of The Horse
1. Protorohippus venticolus.
2. Mesohippus Bairdi.
3. Hipparion gracilis.
4. Onohippidium Munizi (an extinct South American horse).
5. Arab Horse.
A is a cavity for a face gland, and is very marked in Hipparion (3) and Onohippidium (4), while a vestige of it remains in the Arab horse (5). It is absent from some breeds of living horses.
B is the remarkably long nasal slit which is a very noticeable feature of Onohippidium (4).
PLATE LXXIl. SKULLS OF SOME ANCESTORS OF THE HORSE.
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