Its kinda a overkill.
If 1 dino drops 1 bone (100%) and lets say they have 500k hp this would take us.....
Lets say i do 50k dps---for each mob i need 10s too kill him + travel time 10s so 20s per mob.
Now lets see how long this would take:
9999x10=99990 seconds : 60 (min) = 1666.5 min : 60 (hour)= 27.775h : 24 (day) = 1.157291667 day of non stop griding
27h 46.5 min = 27h 46 min 30s = 1 day 3 hours 46 min 30s of non stop griding
......well if you count other items it goes up. So i kinda hope ptr number 9999 will be 2000 on live. It would make much more sense.