Figure 2.

Different sizes and morphologies of scales of Phrynosoma cornutum. (A) Dorsal (back) scales along the medial line. (B) The lateral back is characterised by thorn like scales surrounded by small polygonal scales. (C) In the lateral neck region the thorns are mainly circular and are surrounded by small circular scales. (D) Ventral scales are diamond shaped and rather regular. (E) The scales on the head exhibit an enormous variety with respect to the morphology and size. (F) The scales on the chin are regular and almost circular.