It looks like some kind of little horn to me. I can readily imagine that a deer might have been killed by another deer and that local dogs and foxes might have devoured parts of the corpse. People in general, particularly students, are so unused to the rather shocking sight of "nature red in a tooth and claw" that they can't see a dead animal in an objective way.
Little Horn
It looks like some kind of little horn to me.
Harvest the lower horn!