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ES Chapter 1

What are the five MAJOR uses for horses over the years? Food, work, war, transportation, recreation
What is the horse's family known as? Equidae
The horse is a herbivore. What does this mean? It is a plant eater
What was the first "true horse?" Equus
Equus had how many side bones? 2
Where did the modern-day Equus originate? North America
What two continents did the land bridge connect? Alaska to Siberia
How long ago was the prehorse? 75 million years ago
How many toes did Eohippus have on their front feet? 4 toes
Did Mesohippus have high-crowned teeth or low-crowned teeth? low-crowned
How many toes did Merychippus have? 3
Who was the first one-toed horse? Pliohippus
Did Pliohippus have high-crowned teeth or low-crowned teeth? High-crowned
What were the five major forms of the horse as it evolved? Eohippus, Mesohippus, Merychippus, Pliohippus, Equus
It is estimated about how many horses were used in World War II? 2 million
What is the phylum of the horse? Chordata
What do animals have to have to be classified in the phylum Chordata? A backbone
What class is the horse in? Mammalia
How many diploid chromosomes do horses have? 64
Created by: HorseBowl3000