:Do you have any pics of any of these hybrids that you can post? Do you know if any of these hybrids are fertile either in hybrid or back-crosses?
Hi Gary, You can see a cross of platyrhinos and mcalli in the June 1998 Reptiles Magazine pg.59. Bertrand Baur has an article and pictures on the coronatum and cornutum in the journal Salamandra 20(2/3):70-87. You can see a picture of The hernandezi and orbiculare at this website http://people.freenet.de/phrynosoma/galerie.htm.Put your mouse cursor on the picture to find out the species. It is not known if their fertile. Jeff