John Ayer wrote on Wed, Oct 22, 2014 10:54 PM EDT:
Unfortunately the Piecelopedia does not make clear that the gryphon is the English name of the aanca, and Betza, who describes the gryphon exactly as Murray did, somehow failed to realize that gryphon and aanca were the same thing, and created a new piece with a name that was already taken. Can we untangle this confusion?