Reply To: What type of bone? From what? Homepage › Forums › What Is It? › What type of bone? From what? › Reply To: What type of bone? From what? September 9, 2016 at 11:34 am #11332 Bruce MacFaddenKeymaster @danielle-brennan @llundgren I sent your photos to our Vertebrate Paleontology collection manager. He identified these as fish bones. I would add that depending upon context, they could be Eocene, or perhaps Pleistocene (based on coloration). Are the Zygorhiza the same color?