Answers of Round 1
RIDDLE #1
The second to get a formal name
Due to which is some of it's fame
A few tonnes is it's mass
O r n i t h i s c h i a is order; Reptile is class
Pretty easy one eh!
The clue and catch was: SECOND dinosaur to get its name!
After MEGALOSAURUS,
The answer is,
It's ofcourse none other than
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IGUANODON
RIDDLE #2
It's the longest of the three
But still, then, Australia wasn't free
In that time evolved the plants of flowers
And also evolved the Mosasaurs
Easy peasy again!
LONGEST of the three periods!
And also the LAAAAAAST ONE which killed all our dinos
It HAS TO BE
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CRETACEOUS
AND NOW FOR THE LEGENDARY RIDDLE!
Those who get this right are
LEGENDS OF LABYRINTH!
Gany vs Titu
RETURNSSSSSSSS

Riddle #3
The last surviving of it's group continues the legacy of our game,
From Greek mythology, it derives the name,
Having long necks and limbs that are wide,
One of the largest known terrestrial animal was found almost on globe's every side.
It's the jigar ka tukda of organizers,
Participants ka dushman

Our beloved Titan
Our aankhon ka taara
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TITANOSAUR
Riddle #4
Bipedal predator powerful and giant
North America currently is where they were prevalent
Clawed Latin King is not around
It will chill your nerves if ever again found
MOST KHUNNNKAAAAAAR DINOSAUR!
One that will chill your nerves.
The one that you will remember from ALL Jurassic Park movies 
(This is for Zeal)
It's

T-REX/TYRANNOSAURUS
And now for the last!
One of the easiest for us to shortlist cause Dinosaur is so synonymous with this ERA!
Period so remarkable in evolution
Birds and rodents with rock formations
Humidity with significant climatic transformation
Many important changes find their mention
Having its name as popular as dinosaurs for us!
It's none other than
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The one found in ALL movies and everything associated with DINO.
But many got it wrong!

The answer IS,


JURASSIC ERA
Edited by braveheartdoc - 4 years ago