. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. December 1993 Asiatic Herpetological Research Vol. 3, p. 71 60° 80° 100° 120° r- i v <m S y Si: MONGOLIA "T yyj-:- I. I "V, ""*/ '*\ ,,'V- 1 P. versicolor P. przewalskii P. frontalis 1200 km _1. 140° 50o \ /â ' 40° 30c 20 c FIG. 6. Geographic distribution of P. versicolor, P. przewalskii, and P. frontalis. (Table 5; Wang, 1987), and showed the characters replacement. For example, the pro-half part of the ischiopubis in P. versicolor is ossified and the post-half part st
. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. December 1993 Asiatic Herpetological Research Vol. 3, p. 71 60° 80° 100° 120° r- i v <m S y Si: MONGOLIA "T yyj-:- I. I "V, ""*/ '*\ ,,'V- 1 P. versicolor P. przewalskii P. frontalis 1200 km _1. 140° 50o \ /â ' 40° 30c 20 c FIG. 6. Geographic distribution of P. versicolor, P. przewalskii, and P. frontalis. (Table 5; Wang, 1987), and showed the characters replacement. For example, the pro-half part of the ischiopubis in P. versicolor is ossified and the post-half part still is cartilage. The ischiopubis in P. przewalskii and P. frontalis, conversely, is all cartilage. Additionally, the Meckle's cartilage is not covered by the splenial in P. versicolor but it is covered by the splenial in P. przewalskii and P. frontalis. Electrophoresis also showed that P. versicolor is different from P. przewalskii and P. frontalis, the latter two species being similar (R. Macey pers. comm.). Therefore we suggest that P. versicolor was probably derived earlier from the ancestral stock than P. przewalskii and P. frontalis. The distribution of P. versicolor is from central Asia through western China to the central parts of Mongolia (Boblov, 1986) and Nei Mongol (Zhao, 1978; 1975). Phrynocephalus przewalskii occurs from Zhang Ye, Gansu Province through the Tengger Desert to the west edge of the Helan Mountains. Phrynocephalus frontalis is found from Zhang Ye (Yao, 1983) through the Tengger desert to the Mu Us Desert (Ordos) (Schmidt, 1927) and forward to the south in the east part of Gansu Province. There is also an isolated population at Xun Yang in Shaanxi Province (Song, 1987) (Fig. 6). Phrynocephalus is distributed to the east to about 112°E but does not reach the shore of the Bohai Sea as Zhao (1979) stated. In the Early Tertiary, there was an arid- subtropical continental climate belt from central Asia through the southern edge of the depres
Size: 1458px × 1715px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, bookcontributorharv
