Let me show you the geologic period which spans from 201.3 million years ago or Mya until 145.5 million years ago or Mya on the Jurassic Period Facts. This period began from the end of Triassic period to the early Cretaceous period. The Age of Reptiles is constituted in Jurassic Period. The major Triassic–Jurassic extinction event characterized the beginning of this period. During the Early Jurassic, there was Pliensbachian/Toarcian event which marked extinction. At the end of the Jurassic period, Tithonian event was extinction.
The transition of crocodilians
The crocodilians in the period formed an aquatic model of life from the terrestrial one. The plesiosaurs and ichthyosaurs are the marine reptiles which occupied the oceans. The dominant flying vertebrates were pterosaurs.
The Triassic fauna
The transition was also spotted on the land where the Triassic fauna like crocodylomorph archosaurs and dinosauromorph were replaced by the dinosaurs on land.
The Major Events
The evolutions of therian mammals, birds and lizards were some major events which took place during Jurassic period.
The divisions of Jurassic Period
There are three major divisions of Jurassic Period. They are Early Jurassic, Middle Jurassic, and Late Jurassic epochs.
The name of Jurassic Period was derived from the name of Jura Mountains. They are located within European Alps. The first identified limestone strata from the period were discovered here.
The Divisions On The Jurassic System
There are three divisions of The Jurassic System. They are Lower Jurassic, Middle Jurassic, and Upper Jurassic
The Presence Of Coastlines
After the supercontinent split, the coastlines were formed. Soon, the climate became humid from dry. The lush rainforests replaced the arid desserts of the land.
The Meaning Of The Word Jura
The word Jura is taken from jor. It has Celtic root. Juria is the Latinised word of Jura. The meaning of Jura is forest.
The warm climate was spotted in Jurassic Period. The presence of glaciations was not spotted.
The beginning of Jurassic period
There was a supercontinent called Pangaea. It split into two landmasses. To the south, it became Gondwana. To the north, it became Laurasia.