Of course, no one can be certain exactly what it was used for
Historians: Without written records we can’t know what it is.
Anthropologists: Religious artifact!!!
Archaeologists: It’s an object 8cm long with holes, found in the third layer of the fourth square in the second quadrant, amidst hard clay and silt. No other objects in proximity. That’s what it is.
Archaeobiologists: It’s a carrier of DNA, don’t touch it. What? Oh hell, you’ve ruined it.
Paleontologists: I named thee “Longthinboneii Ilovemyspouseopterex”