Table 1. Summary of family, genera and species diversity of world’s reptiles.

Group	Number of Families	Number of Genera	Number of Species
Reptiles	82	1,131	9,546
Turtles	14	93	327
Crocodilians	3	9	25
Tuataras	1	1	1
Squamata	64	1,028	9,193
Lizards	35	498	5,634
Snakes	23	511	3,378
Amphisbaenians	6	19	181

For convenience, reptiles in general and Squamata (lizards, snakes and amphisbaenians) lineage richness are shown separately.