North America (Mio-Pleistocene)

During the Mio-Pleistocene, North America has relatively stayed the same as it was during the Holocene, but due to natural disasters, Florida and most of California separated from the rest of North America, invasive species turning Florida into a rainforest and most of California becoming a rainforest as well, but with wet savannah and temperate forests on the southern California areas (where it stretches from northern Los Angeles to the southernmost tip of California). Many species thrive and are still around today.

Yukon Grassland
Stretching from Montana to Canada, originally boreal forest, the migrated herding animals, turned it into a rich grassland, due to the grazing of large herbivores, that control the level of grass and trample the ground.

Mammals
 * Reindeer - A large cervid found throughout Northern North America and Eurasia, aswell as some parts of central parts of North America. Also known as caribous, they run in large herds similar to cattle or bison and have large antlers. Humans in ancient times used them for food and transportation.
 * Montanan Horse - A descendant of the mustangs that migrated upward, they now evolved thicker bodies and longer fur. They run in large herds.
 * Canadian Elephant - Descended from Asian elephants that escaped from zoos or safari parks. They are the largest herbivores of the north, they are now covered with woollier to survive the cold than their ancestors.
 * Yukon Gray Wolf - A large subspecies of gray wolf, descended from Eurasian wolves that were introduced to North America by humans, common throughout the grasslands of the north. They are similar to their ancestors.
 * Northern Elk - A northern subspecies of elk, more adapted to the colder climate. It is the most widespread of all the subspecies of elk.
 * Northern Lion - Descended from lions that that escaped from zoos. They are the apex predators of the north. They adapted to the colder climate, by growing thicker fur. They are similar to their ancestors.
 * American Fallow Deer - Descended from fallow deer that were introduced to North America by humans. They are similar to their ancestors.
 * Northern Wood Bison - Descended from a group of wood bison that become larger, adapted to the colder climate with thicker fur. They are similar to their ancestors, but with larger horns to defend themselves against lions or other predators.
 * Interior Scimitar Oryx - Descended from Scimitar oryxes that escaped from zoos or safari parks. They are now covered with thicker fur to survive the cold. They are similar to their ancestors.
 * Northern American Gaur - Descended from Indian gaurs that escaped from zoos or safari parks. They are now woollier to protect themselves against the cold than their ancestors. They are similar to their ancestors.
 * Cascade Dhole - Descended from dholes that escaped from zoos or safari parks, they are common in areas of the grassland, with more trees. They mainly prey on reindeer, deer, bison and horse. They face competition with gray wolves.
 * Shagrat - A large, sheep-sized, capybara-like marmot. Their ancestors were brought from the Future Is Wild universe by humans. They live in herds up to 80 individuals.
 * Northern American Rhinoceros - Descended from Javan rhinoceros that escaped from zoos or safari parks. They are now woollier than their ancestors.
 * Yukon Tapir - Descended from Malayan tapirs that escaped from zoos, common throughout the grasslands and forests of the north. They are now covered in woolly fur to protect themselves from the cold. They are more social than their ancestors, living in groups up to about 30 members in a single herd.
 * Snowstalker - Man brought this animal from the Future Is Wild documentary universe. Despite competion with some large carnivores such as bears, snowstalkers managed to survive and thrive. To kill their prey such as shagrats, deer or bison, they attack their victims with their saber teeth and wait until they die from blood loss.
 * Northern Guanaco - In the late Holocene, guanacos migrated from South America to North America. They are larger then their ancestors, about the size of a large domestic llama. They often migrate with plains bison to search for new feeding grounds.

Birds

 * American Ostrich - Descended from African ostriches that escaped from zoos, safari parks, or wildlife parks. They are covered in woolly feathers stretching from its feet to its head to keep the birds warm, unlike their ancestors.
 * American Moa - Descended from genetically altered Moas that escaped from laboratories. They are herbivores. They are similar to their ancestors, other than they are faster and more alert due to predators.

Ancestral Steppes
This is where many large reptile species, hybrid species, pokemon species, net-navi species, and mammal species thrive. This place has many mountains with few trees around and on them.

Mammals

Great Plains
The great plains of central north America are home to a variety of animals. It is primarily supported by the Colorado river.

Mammals

Great Island
Great Island is now close to North America,

Mammals

Birds

Reptiles