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Before the dinosaurs there was a plethora of life including fish, trilobites, lungfish, amphibians, and plenty more.

In the Proterozoic era (2 billion to 650 million years ago) there was an assortment of single-celled and simple multi-celled creatures. The next 200 million years (early Paleozoic) showed a great expansion of life in the seas, including a diverse assortment of corals, mollusks, trilobites, sponges, shrimps, and other creatures. the next 150 million years (late Paleozoic) included the development of fish, land plants, insects, amphibians, and ultimately reptiles and flowering plants. The earliest dinosaurs began roughly 250 million years ago (the Mesozoic).

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Why was Jurassic period called Jurassic period?

The Jurassic period is named after the Jura Mountains in Switzerland where significant geological strata from this time period were first studied. These rocks contain abundant fossils from the Jurassic period, which lasted from approximately 201 to 145 million years ago.


What eon was the mesozoic era in?

The Jurassic Period of geologic time spanned from 206 to 144 million years ago. It was preceded by the Triassic Period and followed by the Cretaceous Period, all three comprising the Mesozoic Era.


What were the type of plant life during the Jurassic time period?

During the Jurassic period, the dominant plants were gymnosperms, including conifers, cycads, and ginkgoes. Ferns and horsetails were also prevalent, along with the early angiosperms. These plants contributed to the lush forests that characterized the Jurassic landscape.


What perion came before the carboniferous period?

The period that came before the Carboniferous Period is the Devonian Period. It lasted from approximately 419 to 359 million years ago and is often referred to as the "Age of Fishes" due to the diversity and dominance of fish during this time. The Devonian was also marked by significant developments in terrestrial life, including the emergence of early amphibians and the first true forests.


What was the major geologic event during the Jurassic time period?

The breakup of the supercontinent Pangaea and the opening of the Atlantic Ocean was the major geologic event during the Jurassic time period. This led to significant changes in global climate and ocean circulation, as well as the evolution and diversification of marine and terrestrial life forms.