How about a paleo Clovis that has been weathered. Concaved based guilfords have a constricted base. The auricles point in where as a Clovis is either straight or a slight flair in the auricles.
You really think Clovis? Of course that's what I want to hear, but it's the only paleo iv ever found in this spot. Found many Guilfords there. Good news for me. Thanks bro!