The range is still listed as Central Texas North into Southern Oklahoma according to my references. I have never heard of one being found in Northern Mexico, or as far West as Big Bend, where the geology becomes Igneous. I think one was found at Langtry, Tx. which is not too far away, so if you did find one at Sanderson, it would likely be at the edge of range extension. Dwain Rogers wrote a great book on Corner Tangs (Corner Tangs over Texas), but the range has not been confirmed by an Archeological study that I know of. I know some have been found in our area here, and we certainly remain hopeful of finding one.
Hi Luke, Your right, Idahoians do things differently. For those with the money book, check page 913. Frankly the one on the bottom right is a deadringer for my find that in TX I was calling a side tang.
So if y'all enjoyed seeing Idahoian corner tangs...take a look what they do to BASE TANGS..page 906. I think I have a coupla hundred of them. !!
Here Here I Have A Real Good Friend That Found About 3 to 4 inch Tang From West Central Flordia Its Clear Coral Found On Top Of The Ground In Front Of A Turtle Hole And It Is A Corner Tang This Is No JOKE!