Table 1

Table 1. Iguanid karyotype formulas available in 1964

species	2n:forumla^*	source
Anolis carolinensis	36:12MM,24m	Painter, 1921; Matthey, 1931
Dipsosaurus dorsalis	36:12MM,24m	Zeff, 1962
Crotaphytus collaris	36:12MM,24m	Painter, 1921; Zeff, 1962
Phrynosoma cornutum	36:12MM,24m^Ü	Cavazos, 1951
Holbrookia texana	34-36:12MM,22-24m^Ü	Painter, 1921
Urosaurus ornatus	30:12MM,18m^Ü	Painter, 1921
Sator angustus	~28:12MM,16m?^Ü	Hunsaker, pers. comm.
Sceloporus graciosus	30-36:12MM,18-24m^á	Schroeder and Hunsaker, pers. comm.
Sceloporus undulatus	30:12MM,18m^ß	Painter, 1921
Sceloporus occidentalis	22:12MM,10m	Schroeder and Hunsaker, pers. comm.
Sceloporus olivaceus	22:12MM,10m	Painter, 1921

^* MM = Metacentric Macrochromosome, m = microchromosome

^Ü Actual formula = 34:12MM,22m

^á Actual formula = 30:12MM,18m

^ß Actual formula = 22:12MM,10m