Module 4 terms Flashcards
1
Q
cladogenesis
A
splitting of a species into two or more groups
2
Q
what clad do horses come from
A
equous
3
Q
anagenisis
A
transformation occurring within a single lineage
4
Q
hyracotherium
A
- first horse
- dawn horse
- browser
- multiple toes
- eohippus
5
Q
equus
A
modern horse
6
Q
true wild horses
A
- przewalski’s horse
-tarpan: extinct
7
Q
taxonomy
A
kingdom- animalia
phylum- Chordata
class- Mammalia
order- perissodactyla
family- Equidae
genus- equus
species- cabullus
8
Q
what species are of the genus Equus
A
- zebras
- donkeys
- African wild asses
- caballine
9
Q
feral horses
A
domesticated ancestors
- American mustangs
10
Q
ergot
A
-cornified structure
- equivalent to foot pas
- vestigial structure on palmar/plantar aspect of fetlocks
11
Q
chestnuts
A
-medial aspects of carpi and hocks
- vestige of carpal/tarsal pads
12
Q
order perissodactyla
A
- small
- contains only 3 families
- horses
- tapirs
- rhinos
13
Q
what are the 4 categories of modern day horses
A
- ponies
- cold bloods
- hot bloods
- warm bloods
14
Q
modern day horse
A
- over 350 breeds
1. texas
2. calfiornia
3. oklahoma
4. kentucky
5. ohio
