This image is a derivative work of the following images: File:Protovsdeuterostomes.svg licensed with Cc-by-sa-3.0, GFDL 2009-10-17T10:22:31Z YassineMrabet
בשניוני-הפה סדר הדברים הפוך, ומכאן שמם. Date 28 July 2012 Source File:Protovsdeuterostomes.svg Author http://commons.wikimedia.org/wiki/User:YassineMrabet