During the Mesozoic, or Middle Life Era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs. English geologist John Phillips, the first person to create the global geologic timescale, first coined the term Mesozoic in the 1800s.
http://www.livescience.com/38596-mesozoic-era.html
Before Pangaea there were older continents. At the beginning of the Paleozoic the continents were massed in another supercontinent called Pannotia. This was at the end of a global ice age.
http://scienceviews.com/dinosaurs/paleozoic.html
Mesozoic–Cenozoic Radiation. The Mesozoic–Cenozoic Radiation is the third major extended increase in biodiversity in the Phanerozoic, after the Cambrian Explosion and the Great Ordovician Biodiversification Event. The Mesozoic–Cenozoic Radiation began in the mid-Mesozoic and extends through the Cenozoic, with no indication of having yet ended.
https://en.wikipedia.org/wiki/Mesozoic%E2%80%93Cenozoic_Radiation
The Mesozoic Era began roughly around the time of the end-Permian extinction, which wiped out 96 percent of marine life and 70 percent of all terrestrial species on the planet. Life slowly rebounded, eventually giving way to a flourishing diversity of animals, from massive lizards to monstrous dinosaurs.
http://www.livescience.com/38596-mesozoic-era.html
The Paleozoic Era, meaning ancient life is the first of three eras that form a part of the Phanerozoic Eon, the other two periods being the Mesozoic and the Cenozoic. The Mesozoic is the age of the Dinosaurs and the Cenozoic is the era in which we now live. The Paleozoic Era spanned a longer period of time, from approximately 542 Ma to 251 Ma. Just as the Mesozoic is divided into periods (Triassic, Jurassic, and Cretaceous), the Paleozoic Era is also divided.
http://scienceviews.com/dinosaurs/paleozoic.html
During the Cenozoic, mammals proliferated from a few small, simple, generalized forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals, despite the fact that birds still outnumbered mammals two to one.
https://en.wikipedia.org/wiki/Cenozoic
Paleogene [edit]. The Paleogene spans from the extinction of the dinosaurs, some 66 million years ago, to the dawn of the Neogene twenty three million years ago. It features three epochs: the Paleocene, Eocene and Oligocene.
https://en.wikipedia.org/wiki/Cenozoic
The Cenozoic is just as much the age of savannas, the age of co-dependent flowering plants and insects, and the age of birds. Grass also played a very important role in this era, shaping the evolution of the birds and mammals that fed on it.
https://en.wikipedia.org/wiki/Cenozoic
Forgot password? Precambrian, Paleozoic, Mesozoic, and Cenozoic Facts. 33 terms by TosinOlojo. Study. Study  only. Play. Play  only. Play. Play  only. Like this study set? Create a free account to save it.
https://quizlet.com/5651911/precambrian-paleozoic-mesozoic-and-cenozoic-facts-flash-cards/
One group that diversified significantly in the Cenozoic as well were the snakes. Evolving in the Cenozoic, the variety of snakes increased tremendously, resulting in many colubrids, following the evolution of their current primary prey source, the rodents.
https://en.wikipedia.org/wiki/Cenozoic
which is first cenozoic or mesozoic
Mesozoic is first. The Mesozoic is the first than the Cenozoic.