FYI all, learned something new yesterday.
KSDan pm'd me about the possibility that picking up antlers attached to the skull may be illegal and/or require a special permit. Evidently it's the law in KS and he gave me a heads up that it may be the same in MO.
Today at work I dug into my wallet and found a card form one of the local Conservation Officers and gave him a call. Dan was correct. Basically, you CAN pick up antlers still attached to a skull but you need to contact the local CO within 24 hours. The guy I talked to was very open and helpful to me even after I explained that I'd found the antlers then later heard about the possible law/restriction. He said it was no problem and would mail me a form to fill out so that I can get a possession permit or somethin' that would allow me to legally keep the antlers. He said that especially around hunting season or in cases where a deer is just found dead say in a farmers field they like to physically check the animal for cause of death. Mainly to decide if it died of natural causes, was hit by a car or poached.
So, if any of you happen to find a skull, if you care about keeping things legal, just give your local CO a holler and get a permit. If the animal is "fresh" or cause of death is questionable, I'd personally leave it lay where it is and have the CO look at it before taking the head.