Landowner and amateur archaeologist Adam Arkfeld with assistance of Jack Hranicky, RPA (Register of Professional Archaeologists), recently reported on this possible engraved stone among many suspected art objects from the Arkfeld farm site in Pleistocene Coalition News. The art objects described from the site include a suspected (fossil bone) figure with what appears to be a carved horse's head as well as many other horse-like objects.
Paleolithic art author Pietro Gaietto. The feline is facing left and bird is facing right. A markup I made on the photo here illustrates how the two creatures are joined at the back of their heads.
23JP1222 in Missouri in a posting April 5, 2014 on this blog, also interpreted as a feline head looking left joined with a bird head looking right. The Arkfeld site #44FK732 find may be seen as analogous to the site #23JP1222 find.