[1] This bone is extremely notable as the oldest known artefact containing tally marks. It is referenced in every overview or timeline of prehistoric "mathematics". There is an alleged artefact dated to an even earlier time, see Lebombo bone, but as I have established at Talk:Lebombo bone, the date, if not the entire artefact, is likely a hoax. --dab (đł) 13:53, 30 July 2009 (UTC)