66 seconds, almost to the second.
An elephant ONLY
Lion and lioness
Aviaks
An escaped splitpaw gnoll
If you start getting named gnolls, undead Cyclops or a named Cyclops, then you are on the wrong spawn cycle. Seems like if you start getting a ton of mobs in the south east corner, you are likely on the wrong cycle. Most of your mobs should spawn in the western half, South of splitpaw.
If you see a mob path over splitpaw, North / south, kill it as it maybe a placeholder.
Mobs involved in spawning it will path to the northern half of the map but will also path back to the southern half of the Map after a while. Your best bet if you arrive and somebody is already killing a bunch of stuff is to wait and see if he spawns as well as watch to see if mobs are passing up to the north from split paw to the west of split paw.
My phone is flipping out so I'm just going to tag this here and maybe edit the post later.