Aftermath: Prehistoric Animal Return

This is a fanfiction episode of aftermath that shows what would happen if a experiment of trying to invent time travel went horribly wrong, and that would bring back the non-avian dinosaurs, prehistoric mammals etc.
==Timeline==
A.T.D.=After the Disaster
===1-30 Minutes A.T.D.===
The army tries top contain the prehistoric animals but it's no use, the break out of the government lab, and into the city.
===1-6 Hours A.T.D.===
The prehistoric animals are running rampant in the city, luckily the government is trying to evacuate the city. Meanwhile, large herbivores like titanosaurs are trying to find food in the city, while they are doing it, they break into zoos and safari parks, setting the animals in there free.
===7-24 Hours A.T.D.===
Lumbering sauropods cause major traffic jams. Parents are hearing the news on TV, and are telling their children about what happened and to stay indoors. People are also calling 911 when the see even a small prehistoric animal. Some families are even evacuating their homes completely.
===1-3 Days A.T.D.===
Many more people are evacuating their homes after hearing that there are predatory animals as well. With so many people evacuating their homes, there are no farmers to take care of livestock, which make easy picking for predatory animals like escaped predatory theropds such as velociraptors.
===4-10 Days A.T.D.===
Many people have left their pets behind, forcing them to break out of their homes. People are coming into government bunkers and want to stay there until the prehistoric animals until the're gone. With no one at nuclear power plants BIG explosions of radiation happen, killing everything in its path.
===3 Months A.T.D.===
Small dromeosaurs, other small escaped predators and pet dogs, desperate for food, will attack anything, even escaped elephants and titanosaurs, but they don't have any success in this case.
===6 Months A.T.D.===
Winter begins in the Northern Hemisphere. Escaped prehisoric and zoo animals that cannot survive it, like titanosaurs and t-rexes, must migrate to southern latitudes or die. Without artificial heating, cockroaches die by the billions in freezing cold houses. Escaped animals, like Celophysis seek refuge in human homes to spend winter. During their stay, they cause further damage to the abandoned furniture.
===1 Year A.T.D.===
The army is trying to hunt down escaped animal so they can lock them up in Area 51. Dinosaurs are beginning to take over again, as a result, there will be a mini-mass extinction in the decades to come.
===1.5 Years A.T.D.===
Humans are beginning to come out of the government bunkers.
===20-50 Years A.T.D.===
The mini-mass extinction has taken its toll. Almost 90% of all large mammal species have died out, but a few like elephants, whales and chimps managed to survive. However the disaster has surprisingly taken a terrible toll on the human population. The mini-mass extinction has caused over 500 million people to die, but the population starts to grow again, and the population stabilizes at 7 billion.