Reply To: Is this metacarpal from Ursus arctos? Homepage › Forums › What Is It? › Is this metacarpal from Ursus arctos? › Reply To: Is this metacarpal from Ursus arctos? October 14, 2016 at 5:16 pm #13894 Lance ComfortParticipant @smoran Here are some additional pictures of the proximal phalanx. Let me know what you think..Thanks….Lance Attachments:You must be logged in to view attached files.