. Breviora. . Figure 10. Photograph of the Peruvian phenacosaur in life. Photo by R. A. Mittermeier. Sumaco, Napo Province, Ecuador (0°34'S, 77°09'W), to Vencere- mos, Department of San Martin, Peru (ca. 5°45'S, 77°45'W) (see Fig. 9). While P. orcesi is quite distinct from P. heterodermus and its relatives, P. nicefori, P. inderenae, and the undescribed giant species from Ecuador, the latter are a complex in which the species are not very sharply delimited morphologically; it is a possibility that P. orcesi is a complex also, and that the Peruvian juvenile is a distinct species. Provisionally
. Breviora. . Figure 10. Photograph of the Peruvian phenacosaur in life. Photo by R. A. Mittermeier. Sumaco, Napo Province, Ecuador (0°34'S, 77°09'W), to Vencere- mos, Department of San Martin, Peru (ca. 5°45'S, 77°45'W) (see Fig. 9). While P. orcesi is quite distinct from P. heterodermus and its relatives, P. nicefori, P. inderenae, and the undescribed giant species from Ecuador, the latter are a complex in which the species are not very sharply delimited morphologically; it is a possibility that P. orcesi is a complex also, and that the Peruvian juvenile is a distinct species. Provisionally we assign the Peruvian specimen (Fig. 10) to the species P. orcesi, but new material and much more careful collecting in the montane areas of Peru and Ecuador are clearly much to be desired. ACKNOWLEDGMENTS The figures of the phenacosaurs were done by Laszlo Meszoly, the maps by Stephen D. Nash and Laszlo 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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