No, many other organisms came before megalodon.
When dinasours were alive
The angels and the greek gods
God created them and let them roam the earth
no...it wasn't the first shark.
Paleozonic era
no...it wasn't the first shark.
1546bajilcabjillin yrs ago in other words a LONG time ago
They roamed the waters of the Earth around 18 to 1.5 million years ago.
Because it was the biggest fish/dinosaur to be on the planet earth, and cause it was the most terrifying and fierce on the earth.
No. But they make good fun for storytellers.
It is very unlikely.
160 million years