Possible Clues:

• One will never forget to make a trunk call
• Huge African or Indian animal
• Then leap out of jumbo?
• To a very large extent not forgetful
• Pachyderm hunted for ivory
• If the enamel were, there'd be nothing left in it
• To a large extent less forgetful than peel
• The plane that is not for getting?
• The animal that never forgets
• Remembering African native