Quinkana is a terrestrial crocodile that rivaled the likes of Megalania. It was among the 4 apex predators that were in Australia at the time.
Ingame, the Quinkana should be able to gallop like the current Sarcosuchus when sprinting except much faster and with less stamina drain.
Although a terrestrial crocodile, Quinkana was likely able to swim very well. Quinkana should be a swimmer in the game but no faster than a Suchomimus.
If that sounds too OP let me elaborate slightly more.
Quinkana was smaller than Megalania, therefore should be weaker.
Land speed 7/10
Water speed 6/10 to 10/10 (up to devs if it is added)
Size: not as long as Megalania but stands taller than it
Diet: able to eat fish and meat without needing ability upgrades.
Overall: Very versatile and unique creature but is mediocre in attack and defense stats, not too big either.