Module 4 terms

Question 1

cladogenesis

Answer 1

splitting of a species into two or more groups

Question 2

what clad do horses come from

Answer 2

equous

Question 3

anagenisis

Answer 3

transformation occurring within a single lineage

Question 4

hyracotherium

Answer 4

• first horse
• dawn horse
• browser
• multiple toes
• eohippus

Question 5

equus

Answer 5

modern horse

Question 6

true wild horses

Answer 6

• przewalski’s horse
  -tarpan: extinct

Question 7

taxonomy

Answer 7

kingdom- animalia
phylum- Chordata
class- Mammalia
order- perissodactyla
family- Equidae
genus- equus
species- cabullus

Question 8

what species are of the genus Equus

Answer 8

• zebras
• donkeys
• African wild asses
• caballine

Question 9

feral horses

Answer 9

domesticated ancestors
- American mustangs

Question 10

ergot

Answer 10

-cornified structure
- equivalent to foot pas
- vestigial structure on palmar/plantar aspect of fetlocks

Question 11

chestnuts

Answer 11

-medial aspects of carpi and hocks
- vestige of carpal/tarsal pads

Question 12

order perissodactyla

Answer 12

• small
• contains only 3 families
• horses
• tapirs
• rhinos

Question 13

what are the 4 categories of modern day horses

Answer 13

1. ponies
2. cold bloods
3. hot bloods
4. warm bloods

Question 14

modern day horse

Answer 14

• over 350 breeds
  1. texas
  2. calfiornia
  3. oklahoma
  4. kentucky
  5. ohio