種類
Smaug barbertonensis (Van Dam, 1921) – Barberton girdled lizard
Smaug breyeri (Van Dam, 1921) – Waterberg girdled lizard
Smaug depressus (V. FitzSimons, 1930) – Zoutpansberg girdled lizard
Smaug giganteus (A. Smith, 1844) – giant girdled lizard (type species)
Smaug mossambicus (V. FitzSimons, 1958) – Mozambique girdled lizard
Smaug regius (Broadley, 1962) – regal girdled lizard
Smaug vandami (V. FitzSimons, 1930) – Van Dam's girdled lizard
Smaug warreni (Boulenger, 1908) – Warren's girdled lizard