Answers

2014-05-06T12:50:11+05:30
Life period of the Icthyo Stegga is 20 years 
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I meant which was the period it lived in.
2014-05-06T15:24:10+05:30
It may be 20 years....
1 5 1
I meant which period did it live in.
It lived at the upper Devonian period(374-359 million years ago)