Sucec 's megalodon was once an inhabitant of the region 's Miocene - Pliocene Pannonian Sea .
2015 - A man named Stjepan Sucec discovered a megalodon tooth while hunting for shells in the Kupa River near Pokupsko , Croatia .
Stjepan Sucec 's megalodon was once an inhabitant of the region 's Miocene - Pliocene Pannonian Sea .
2015 - A man named Stjepan Sucec discovered a megalodon tooth while hunting for shells in the Kupa River near Pokupsko , Croatia .