. Bonner zoologische Monographien. Zoology. 79 Miscellaneous Cranial Characters Character 38: rostral portion of skull (Fig. 16, 23, 25, 33). Among the outgroup taxa, two morphologies of the rostral portion of the skull are observed. A spatulate snout was observed in Opiums cuvieri and all anoloids except Enyalius and Prist idacty- lus. Few tropidurines such as Platynotus (Tapinurus) semitaeniatus, Ophryoessoides ca- ducus (Etheridge, pers. comm.) and O. tricristatus (Etheridge, pers. comm.) also show a spatulate rostrum. All other outgroup taxa have an arched anterior portion of the skull. Us
. Bonner zoologische Monographien. Zoology. 79 Miscellaneous Cranial Characters Character 38: rostral portion of skull (Fig. 16, 23, 25, 33). Among the outgroup taxa, two morphologies of the rostral portion of the skull are observed. A spatulate snout was observed in Opiums cuvieri and all anoloids except Enyalius and Prist idacty- lus. Few tropidurines such as Platynotus (Tapinurus) semitaeniatus, Ophryoessoides ca- ducus (Etheridge, pers. comm.) and O. tricristatus (Etheridge, pers. comm.) also show a spatulate rostrum. All other outgroup taxa have an arched anterior portion of the skull. Using the algorithm for determining polarity at the basal node of the ingroup when outgroup relationships are unknown, indicates that the arched anterior portion of the skull is the plesiomorphic condition with a (5:1) consensus. Basiliscus shows the common "iguanid" condition in which the rostral portion of the skull is rounded and arched. The premaxillary spine together with the nasals form part of this arch. In Corytophanes and Laemanctus on the other hand, the rostral portion. Fig. 33: Lateral view of Basiliscus, Corytophanes and Laemanctus. (Drawings by G. Christian).. 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, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
