. Breviora. 969 CYTOTAXONOMY OF IGUANIDS. Fig. 2. Mitotic metaphase of Chamaeleolis porcus male showing the "typical iguanid" condition of 12 metacentric macrochromosomes, and a sharp break in size between the macro- and microchromosomes. Among Anolis, Etheridge (1960) defined two major groups termed alpha and beta. Chromosome studies (Gorman, et al., 1967) have shown that the primitive alpha karyotype is identical with that of the primitive iguanid condition (12 metacentric macro- chromosomes, 24 microchromosomes). In a recently proposed classification of iguanids on the basis of st
. Breviora. 969 CYTOTAXONOMY OF IGUANIDS. Fig. 2. Mitotic metaphase of Chamaeleolis porcus male showing the "typical iguanid" condition of 12 metacentric macrochromosomes, and a sharp break in size between the macro- and microchromosomes. Among Anolis, Etheridge (1960) defined two major groups termed alpha and beta. Chromosome studies (Gorman, et al., 1967) have shown that the primitive alpha karyotype is identical with that of the primitive iguanid condition (12 metacentric macro- chromosomes, 24 microchromosomes). In a recently proposed classification of iguanids on the basis of structure of the caudal vertebrae (Etheridge, 1967), Chamaeleolis and Phenacosaurus were placed in a group with the alpha anoles; chromosomes sup- port this classification. Polychrus remains a puzzle within the iguanids. Now that three species have been studied it is quite clear that they are close to each other inter se, but distinctly different from anoles and anoline genera such as Chamaeleolis, Phenacosaurus, and Anisolepis (Gor- man, et al., 1967). Since this paper was originally written, we have received the following new 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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