Ice Ages - When Proterozoic: 600 – 800 million years ago Ordovician and Silurian: 430 – 460 million years ago Pennsylvanian and Permian: 250 – 350 million years ago Neogene to Quaternary: The last 4 million years
The Ice Age
Ice Age Affects...
Where?
Mastodon Mammal 6.5 – 10 feet tall Herbivores Related to Elephant and Mammoth
Mastodon Tusks used for protection Hunted by humans EXTINCT!
Smilodon feet in length 3 feet in height Weigh about 440 LBS Ferocious hunters Carnivores EXTINCT!
Smilodon The hunter at work Sharp molars Shred their prey
Elasmotherium 16 – 25 long 6.5 long horn Weighs 3.5 – 4.5 tons Herbivores Related to Rhino