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| | affinities |
 | | The relict (endemic genera) reptile genera in the country comprises genus Pseudotyphlops of family Uropeltidae ; genera Aspidura, Balanophis, Cercaspis, Haplocercus of family Colubridae ; genera Ceratophora, Cophotis, Lyriocephalus of family Agamidae and genera Nessia, Lankascincus, Chalcidoceps of family Scincidae. |
 | | The Indian subcontinent and the Malayan region have been divided into zoogeographical regions or sub-regions based on criteria such as topography, climate and the vegetation formation. |
 | | Based on the number of endemics in each group, Family Uropeltidae, Typhlophidae and the genus Aspidura of Colubridae are considered to be early arrivals in the country while species such as Argyrogena fasciolata, Gerardia prevostinia etc. are considered late arrivals, as they are only known from very few specimens. |
| www.pdn.ac.lk /socs/zaup/reptiles/affinities.html (435 words) |
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