[BOW 2-5] The Jurassic Period

The Jurassic Period.

Dinosaurs then.

The Jurassic Period was in the middle of the Mesozoic Era, somewhere around 200 million to 145 million years ago. In this era, dinosaurs roamed  the Earth.

What was changed in that period?

More floods of lava occurred from fissures and  volcanoes. There were more Archosaurian reptiles; the population of dinosaurs, pterosaurs, and marine reptiles all increased, gymnosperms were the most dominant plants, and small mammals began appearing.

What was changed from then to now?

Dinosaurs now.

Well for starters, there are no more dinosaurs in the face of the Earth. The environment back then was much more humid than nowadays. The sea-level is lower than in the Jurassic Period. South America has parted from Africa.

References:

 http://simple.wikipedia.org/wiki/Jurassic