Wednesday 13 February 2019

1.What is Jurassic period?

Period on earth from 199.6 to145.5 millions years ago is known as Jurassic period.

2. Why Jurassic period has been named so?

The name Jurassic has been given after the Jura mountains within European Alps where fossils from limestone strata belonging to Jurassic period were first discovered.

3. How was the earth at the time of early Jurassic in early Jurassic?

The single supercontinent pangaea has had started separating into two land masses Laurasia towards north and Gondwana towards south. There was no land at poles.

4.How was the climate of Jurassic?

During Jurassic the climate had turned from dry to humid particularly in coastal areas. Rains had converted several deserts into rainforests.

5.Which animals dominated in Jurassic?

Dinosaurs on land, ichthyosaurs and plesiosaurs in oceans and pterosaurs in air.
Small shrew like mammals were also there . Among amphibians salamanders and caecilians were also there.

6. When Archaeopteryx evolved?

In late Jurassic from Coelurosaurian dinosaurs.

7. Which two group of plants dominated the Jurassic?

Gymnosperms particularly conifers Ginkgo plants were most common in northern parts ferns were also there.

8. Jurassic is also known as golden age of ............ dinosaurs

Herbivorous dinosaurs also known as sauropods .

9. Jurassic period is also known as the golden age of ..........

Reptiles

10. In which countries/continents Jurassic fossils have been found?

South Africa, Russia, Japan, India, Australia,United Kingdom and some other parts of Europe.

By:Ashwani,biology teacher,Phagwara.

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