Evolution Question 143
143. The earliest fossil form in the phylogeny of Horse is
[1994]
(a) Merychippus
(b) Mesohippus
(c) Eohippus
(d) Equus.
Show Answer
Answer : c
Hints & Solution
(c) Evolutionary history of horse was described by O.C. Marsh, 1879. Origin of horse took place in Eocene period and first fossil of horse was Eohippus found in North America.
$Fossil : Eohippus \rightarrow Mesohippus$
$Period : (Eocene)\quad (Oligocene)$
$\rightarrow \underset{(\text { Miocene) }}{\text { Merychippus }} \rightarrow \underset{(\text { Pliocene) }}{\text { Pliohippus }} \rightarrow \underset{\begin{array}{c}\text { Recent } \\ \text { (Holocene) }\end{array}}{\text { Equus }}$
