TABLE 1

SUMMARY OF KARYOTYPED LIZARD GENERA AND SPECIES, BY FAMILY

¹  Data from Bezy (1972).

²  Karyotypes may be derived with a few pericentric inversions in addition to Robertsonian rearrangements.

The table is based on Gorman (in press)

N.B. Of 15 lizard families for which karyotypic data exist, 6 contain species having karyotypes with 12 approximately metacentric macro chromosomes and 24 microchromosomes. Four more families have species whose karyotypes differ from this 12 and 24 pattern only by Robertsonian rearrangements. Only 3 families contain no species whose karyotypes can be derived from this 12 and 24 pattern with relative ease.