Key to Cordylidae by Donald G. Broadley, Natural History Museum of Zimbabwe, Arnoldia Zimbabwe series of miscellaneous publications of The National Museums And Monuments, Volume 9, No:30, 31 december 1988, page 411-412.
CORDYLIDAE
Key to the genra:
1a. Serpentiform; forelimbs minute or absent, hindlimbs vestigal: Chamaesaura ( C.macrolepis macrolepis )
1b. Not serpentiform; limbs well developed : 2
2a. Dorsum covered with regular transverse rows of quadrangular scales : 3
2b. Dorsum covered with small granules : Platysaurus
3a. A single pair of parietals ( see figure below a, b ); tail much longer than head and body : Gerrhosaurus
3b. Two pairs of parietals ( see figure below c ); tail little longer than head and body: Cordylus
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Dorsal views of head of : a. Gerrhosarus major; b. G.nigrolineatus; c. Cordylus tropidosternum
Key: fn = frontonasal; fp = frontoparietal; p = parietal; r = rostral; sc = supraciliaries