14 MILLION YEARS AGO

1. Early mastodon Zygolophodon
2. Rhinoceros Teleoceros
3. Giraffe-deer Dromomeryx
4. Mountain beaver Mylagaulus
5. Dog Telmatherium
6. Camel Miolabis
7. Pony-sized horse Merychippus
8. Swamp cypress Taxodium
9. Ginkgo Ginkgo
10. Sassafras Sassafras
11. Serviceberry Amelanchier
12. Cattail Typha