Ok ok 3 fingers with jointed bones...right...so we can assume since they aren't tentacle like and there is no opposable thumb that this is from a creature that couldn't use tools.
Unless this thing had some other organ(s) to assist that 3 fingered hand i really can't see this hand being from a creature with civilization...those long fingers are highly specialized like some thing for digging termites or ants from thier hives.
If it is from something not of earth it would be something from a lower gravity environment with they way it looks and then the bones would be less dense than an earth creature and it would have a very difficult time moving or living on our planet without some technological assistance.
I believe this maynw could be from some rare extinct or unknown animal. That's a possibility....