Predator X is the most powerful marine reptile ever discovered.
Larger forms may have also fed upon smaller marine reptiles.
In fact, the creature was not even half the size of Shastasaurus, which is the largest known marine reptile.
Its diet would have included fish, squid and other marine reptiles.
Some marine reptiles also occasionally rest and bask on land.
Therefore, some fossils of large marine reptiles are nearly complete, and so can be identified to species.
It is a marine reptile, belonging to the family Cheloniidae.
The second theory considers the origin to be in water, from marine reptiles.
The bounty on the capture or death of this marine reptile is 12,000 G.
At least some of these marine reptiles are known to have fed on Pteranodon.