Question

first species of dinosaurs

Answer 1

Hi friend here is your answer

saurischian

Answer 2

Hi pal
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here is ur answer
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For the past 20 yrs, Eoraptor har represented the beginning of the age of Dinosaurs.
The oldest dinosaur discovered was about 230 million yrs ago
Herrerasaurus and Eoraptor were discovered in Argentina and are probably the oldest too.
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hope this helps
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##HARSjake