The Mesozoic era, the 'Age of Reptiles', the time when dinosaurs and other sauropsids, big and small and both predator and prey, were the dominant animal species on land, sea, and air and were the largest land animals that ever walked the earth while one type of dinosaur eventually evolved into birds.

The era was marked by two major evolutionary events from beginning to end: the Cambrian Explosion (when animal life became complex for the first time and many modern phyla's of animals evolved from a common ancestor during this event, which began around 542 million years ago) and the Permian-Triassic Mass Extinction aka the 'Great Dying' (when nearly all life on Earth such as 95% of all marine life and 70% of land vertebrates were wiped out in the biggest and most catastrophic mass extinction in our planet's history, 252 million years ago).

The Paleozoic era, the 'Age of Early Life', the era when early, complex multicellular organisms such as animals and plants thrived and evolved in the oceans, giving rise to many groups (both extinct and living) and eventually moved out of the water and onto dry land (such as tetrapods) and evolved and thrived.

2.21 Episode 56: Mini-Madagascar CretaceousĪfter traveling around the world to witness and follow the lives of any animals and protecting them from harm such as Zach and the other villains, using their Creature Power, zoologist and conservationist brothers Chris and Martin Kratt, along with their friends Aviva, Koki, and Jimmy Z, are back and this time, they are going on an epic animal mission and adventure that would take them back hundreds, thousands, and even millions of years into the past as after the main events of Wild Kratts, Aviva has upgraded the Totunga ship to be able to time travel that would take them into any period or era in Earth's long history and so they travel into three geological eras that make up the Phanerozoic eon:.

2.19 Episode 54: Unlikely Triassic Friendship.

2.7 Episode 42: Have Yourself a Mammoth Little Christmas.

Wild kratts