The diagrams illustrate the evolution of the horse with particular emphasis on the changing foot structure over a 40 million-year period.
As can be seen, this development took 40 million years and it had four stages in total.
The first picture gives information about an animal name Eohippus, whose foot structure resembles birds. It has four fingers. After 10 million years, this animal transformed into another one named Mesohippus. One vital aspect that changed was the foot structure that has three fingers now. Besides, the size has increased.
Over the next 15 million years, Mesohippus developed into Merychippus that had a stretched middle finger and also a stronger body structure. Simultaneously, it was almost identical in shape to the modern horse. Consequently, after 15 million years, the horse finally took the shape that we see today. It was named as Horse, and it developed fully to have a stronger body shape. The foot structure underwent a significant change to transform from a three-finger foot to a single bone foot.
The diagrams illustrate the evolution of the
horse
with particular emphasis on the changing foot
structure
over a 40 million-year period.
As can be
seen
, this development took 40
million
years and it had four stages in total.
The
first
picture gives information about an animal name
Eohippus
, whose foot
structure
resembles birds. It has four fingers. After 10
million
years, this animal transformed into another one named
Mesohippus
. One vital aspect that
changed
was the foot
structure
that has three fingers
now
.
Besides
, the size has increased.
Over the
next
15
million
years,
Mesohippus
developed into
Merychippus
that had a stretched middle finger and
also
a stronger body
structure
.
Simultaneously
, it was almost identical in shape to the modern
horse
.
Consequently
, after 15
million
years, the
horse
finally
took the shape that we
see
today
. It
was named
as
Horse
, and it developed
fully
to have a stronger body shape. The foot
structure
underwent a significant
change
to transform from a three-finger foot to a single bone foot.