After Uetz, Etzold & Chenna, 1995-2000 [“The TIGR Reptile Database ” (former EMBL Reptile Database)]

<==o Iguanidae (leguaanit)
   |?- †Iguania genera et species indet. [Apesteguia, Agnolin & Lio, 2005] [U.Cret. SSA.]
   |--o Amblyrhynchus cristatus Bell, 1825 (Galapagos marine iguana; merileguaani)
   |  |-- A. c. cristatus Bell, 1825
   |  |-- A. c. albemarlensis Eibl-Eibesfeldt, 1962
   |  |-- A. c. hassi Eibl-Eibesfeldt, 1962
   |  |-- A. c. mertensi Eibl-Eibesfeldt, 1962
   |  |-- A. c. nanus Garman, 1892
   |  |-- A. c. sielmanni Eibl-Eibesfeldt, 1962
   |  `-- A. c. venustissimus Eibl-Eibesfeldt, 1956
   |--o Brachylophus
   |  |-- B. bulabula Fisher, Harlow, Edwards & Keogh, 2008
   |  |-- B. fasciatus (Brongniart, 1800)
   |  `-- B. vitiensis Gibbons, 1981
   |--o Conolophus Steindachner, 1876 (Galapagos iguanas; galapagoksenleguaanit)
   |  |-- C. marthae Gentile & Snell, 2009 (Rosada; Pink land iguana; wolfinleguaani) [<Wolf Volcano; Isla Isabella>]
   |  |-- C. pallidus Heller, 1903 (Santa Fe Land Iguana, Barrington land iguana, santafesaarenleguaani) [<Santa Fe Island>]
   |  `-- C. subcristatus (Gray, 1831) (Yellow land iguana; laavalisko, laavaleguaani)
   |--o Ctenosaura R. NA. CA.
   |  |-- C. acanthura
   |  |-- C. alfredschmidti
   |  |-- C. bakeri
   |  |-- C. clarki
   |  |-- C. defensor
   |  |-- C. flavidorsalis
   |  |-- C. hemilopha
   |  |-- C. melanosterna
   |  |-- C. oedirhina
   |  |-- C. palearis
   |  |-- C. pectinata
   |  |-- C. quinquecarinata
   |  `-- C. similis
   |--o Cyclura U.Pleist.-R. WInd. (sarvikuonoleguaanit)
   |  |-- C. carinata
   |  |-- C. collei
   |  |-- C. cornuta (sarvikuonoleguaani)
   |  |-- C. cychlura
   |  |-- C. nubila
   |  |-- C. pinguis
   |  |-- C. ricordi
   |  `-- C. rileyi
   |--o Dipsosaurus dorsalis L.Mioc.-R. NA. (aavikkoleguaani)
   |  |-- D. d. catalinensis van Denburgh, 1922
   |  |-- D. d. dorsalis (Baird & Girard, 1852)
   |  |-- D. d. lucasensis van Denburgh, 1920
   |  `-- D. d. sonoriensis Allen, 1933
   |--o Iguana U.Pleist.-R. WInd., R. CA. SA., U.Pleist.-R. SA. (iguaanit, leguaanit)
   |  |-- I. delicatissima
   |  `-- I. iguana (iguana; iguaani, vihreäleguaani, leguaani)
   `--o Sauromalus Pleist.-R. NA.
      |-- S. ater
      |-- S. hispidus
      |-- S. klauberi
      |-- S. obesus (chunkwalla)
      |-- S. slevini
      `-- S. varius

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