. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. (ID-IS ^17 di' i I TTT) ii): 1 TTTD LOr. i jaD. Figure 8. Anterior end of tine dorsal armor, PC 13 forward, with selected precaudal scale rows numbered on: A. Crocodylus siamensis, MCZ 3716. B. C. rhombifer, l\/ICZ 12081. C. C. intermedius, FMNH 75658. D. C. acutus, FMNH 23147. E. C. acutus, MCZ 10920. scutes may occur in PC 26. Deraniyagala (1939) reports specimens with up to four. Crocodylus novaeguineae In Crocodylus novaeguineae (Fig. 7B,
. Advances in herpetology and evolutionary biology : essays in honor of Ernest E. Williams. Williams, Ernest E. (Ernest Edward); Herpetology; Evolution. (ID-IS ^17 di' i I TTT) ii): 1 TTTD LOr. i jaD. Figure 8. Anterior end of tine dorsal armor, PC 13 forward, with selected precaudal scale rows numbered on: A. Crocodylus siamensis, MCZ 3716. B. C. rhombifer, l\/ICZ 12081. C. C. intermedius, FMNH 75658. D. C. acutus, FMNH 23147. E. C. acutus, MCZ 10920. scutes may occur in PC 26. Deraniyagala (1939) reports specimens with up to four. Crocodylus novaeguineae In Crocodylus novaeguineae (Fig. 7B, C), the continuous and contiguous pre- caudal armor is regular in scute dimen- sions and keel row alignment. As in C. porosus and C. siamensis, interscute tri- angles occur. There are 16 or 17 contin- uous precaudal rows, with seven to twelve, usually eight, contiguous scutes at midbody. Detached flank scutes, though reduced, sometimes form an addi- tional keeled row on each side. The thoracic and cervical armors are separated by spaces of skin. PC 18 is represented by vestiges or elements separated on the midline. PC 19 is absent, or, in a single specimen, rudimentary. PC 20+21 has two scutes, and PC 22+23 has two large median elements, and may have one or two smaller elements on either side. In many individuals, smooth or fine granular skin separates the two cervical rows (PC 20+21 and PC 22+23) or the left and right halves of one or both (Fig. 7B). Some- times PC 22 and PC 23 are not com- pound. All or any combination of cervical scutes may be noncontiguous. There are four to six scutes in PC 26. PC 24 and PC 25 are sometimes not evident, but are usually present as bluntly keeled scales. Previous authors have differed on whether the freshwater crocodiles of the Philippines should be recognized as a species (mindorensis) distinct from C. novaeguineae, or merely as a subspecies of the latter (Wermuth, 1953; Schmidt, 1956; Wermuth and Mertens, 1961). Wermuth and Mertens, in the
Size: 1956px × 1277px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniver, bookcentury1900, booksubjectherpetology
