Found these fossils on our ranch. My two little guys and I often go "exploring" on foot. They love finding the "clam shell" fossils and the "curly Q" fossils. The one we found today are different than anything we have ever seen.And we have been exploring this small 640 acre ranch for a decade. These are tubular like a bone with marrow would look. The ranch is one mile west if Oplin, TX in the extreme southwest corner of Callahan County.