Hello to All. Any help and input on a correct ID will be awesome. Spotted on the high tide line amongst shell and other debris. The location has seen significant fluctuations in sea levels and has produced Pleistocene material, such as horse teeth, mammoth teeth, even Rhino and Hippo teeth but also Miocene fossils like Megalodon teeth, cetacean teeth and inner ear periotic bones as well as bulla, Great White and Mako shark teeth, just to name a few. All washed ashore by tidal movement. The specimen in question was photographed alongside a horse incisor and a mammoth tooth fragment. Its cross section seems to show cross hatching patterns of ivory but I fail to see how it can be part of elephant or mammoth tusk. It measures 5 cm in length and 1,1 cm at its widest point. Would love to hear from the TFF experts. Thanks a lot.