. Bonner zoologische Monographien. Zoology. 44 the sceloporine Phrynosoma the maxillary process of the palatine does contact the ec- topterygoid, partially covering the medial aspect of the maxilla in dorsal view and ex- cluding it from the suborbital fenestra. In the remaining "iguanid" taxa the maxillary process and the ectopterygoid approach one another but are not in Fig. 17: Dorsal view of the inferior orbital rim and the infraorbital fenestra in Laemanctus (left) and Basilicus (right); inf for = infraorbital foramen Basiliscus and Laemanctus do not have a palatine-ect
. Bonner zoologische Monographien. Zoology. 44 the sceloporine Phrynosoma the maxillary process of the palatine does contact the ec- topterygoid, partially covering the medial aspect of the maxilla in dorsal view and ex- cluding it from the suborbital fenestra. In the remaining "iguanid" taxa the maxillary process and the ectopterygoid approach one another but are not in Fig. 17: Dorsal view of the inferior orbital rim and the infraorbital fenestra in Laemanctus (left) and Basilicus (right); inf for = infraorbital foramen Basiliscus and Laemanctus do not have a palatine-ectopterygoid contact. In Coryto- phanes there is a general tendency of the maxillary process of the palatine to contact the ectopterygoid. However, only in C. cristatus is contact well-established. The distribution of the character states suggests that dorsal separation between the maxillary process of the palatine and the ectopterygoid is the plesiomorphic condition for "iguanids" (7:0 consensus) and for squamates. The contact of the maxillary process of the palatine with the ectopterygoid has been independently derived in Phrynosoma, Amblyrhynchus, in some Brachylophus and in Corytophanes cristatus. Pterygoid The pterygoids are paired median bones that form the posterior portion of the palate. Three distinct processes are observable that extend anteriorly, laterally and posteriorly. The palatine process sutures anteriorly with the palatine bone. There is an elevated por- tion on the ventral surface, at the base of the palatine process, which contains an arc of pterygoid teeth. Pteryoid teeth vary in shape, size and number, both inter- and intra- specifically. In Basiliscus there are four or five slightly recurved teeth parallel to the in-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bonn, Zoolo
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