History and development of the horse Flashcards
What are 4 visible changes that happen to a horse when it undergoes evolution
*Reduction in the number of toes
*Increase in the size of the cheek teeth
* lengthening of the face
*Increase in body size
How many toes the Eohippus have on his back feet
3 on his back
4 on his front
What were the first two types of snaffle bits to appear
The plain bar snaffle
Jointed bit
preserved fossil indicate that horses have been around for how long
60 million years
Who was the first true horse
Equus
List all single-toed animals.
Horses and their close relatives
Describe the path that horses migrated in
From North America in Alaska = Siberia = Asia = Europe
list the 5 major forms of horses throughout evolution.
Eohippus, Mesohippus, Merychippus, Pliohippus, Equus
What is the zoological classification of the modern horse?
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Equus
Species: Equus Caballus
how many pairs of chromosomes do donkeys have?
31
List 3 past or present wild horses
Oriental light-legged horses
Wild black horses of Flanders
Predecessors to European draft and pony breads
Tarpans
Przewalski’s horse
Mustangs
