Unidentified… stone tool?

While looking at this stone I found tool marks that made me take a second look. I would like to know if anyone has seen any stone tone tools with marking close to these. I would like to ask for your help see if this is shaped by man or natural means.

Ask and I’ll get more pics if needed.

IMG_0948

IMG_0949

IMG_0950

IMG_0952

Can you identify? Found in S/W MO.

Can you identify? Found in S/W MO.