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Flashcards in horse history Deck (17)
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1

macroevolution vs microevolution

species to species evolution, all species evolved from one species vs change/evolution only within a species

2

hyracotherium

aka eohypus "dawn horse", 55 MYA found in Wind River Basin, NY and London, England 10-20" tall with 4 front toes and 3 hind toes. had 3 incisors, 1 canine, 4 premolar and 3 molar, teeth were small due to diet, ate berries. 18 ribs.

3

mesohippus

40 MYA, found in N. America and Italy, 24" tall, 3 front and 3 hind feet, 1st equine ancestor to walk on one toe. has 3 incisors, 1 canine, 3 premolars and 3 molars. 16 ribs.

4

merychippus

17 MYA, found in central america and Europe, 40" tall, had 3 front and 3 hind toes. 3 incisor, 1 canine, 3 premolar and 3 molars. 19 ribs. radius and ulna were fused to eliminate rotation and legs were lengthened for speed

5

Pliohippus

15 MYA, found in Asia and South America, 32" tall, 1 front and 1 hind toe. had 3 incisors, 1 canine, 3 premolars and 3 molars. 18 ribs. 1st to have one toe and most likely gave rise to donkeys

6

Prezwalski's horse

53" (13.1 HH), 1 front and 1 hind toe (vestigial 2nd and 4th splint bones). 3 incisors, 2 canines, 4 premolars and 3 molars. 18 ribs. went extinct 11,000 yrs ago in Canada and 12,000 yrs ago in US

7

Equus

4 MYA, found in Idaho and Europe

8

OC Marsh and Thomas Huxley

OC= paleontologist and Thomas= evolutionist, published their theory in the US journal of science and presented it in New York in 1879

9

Against Evolution

Okapi-very similar bone structure to merychippus, nothing found in the same location. pliohippus and merychippus found in the same strata layer. variation- no"perfect horse". no DNA evidence to prove fossils are related to today's horses.

10

For Evoltion

progression-can see the changes, variation- normal horses=18 ribs, arabians=17 ribs. no DNA to disprove theory. What are you saying?

11

hunted horses

paleolithic man= extinction of horses in N and S america (8000 BC)found 40,000 fossilized horses in Solutre in France, cave paintings=prey

12

Against Evolution

Okapi-very similar bone structure to merychippus, nothing found in the same location. pliohippus and merychippus found in the same strata layer. variation- no"perfect horse". no DNA evidence to prove fossils are related to today's horses.

13

domestication of horses

domesticated 3000 BC in china and mesopotamia. domesticated 2500 BC in Europe (found horses were more tame and faster than ox)

14

1st gelding

russia, 1000 BC

15

1st horse with spots

Spain

16

Early bits

1500 BC, snaffle and studs on inner cheek pieces, riding in rope and hackamores

17

Order of use

hunted, draft, transportation, warfare, recreation