Sta
, Staurois
Ste
Stefania Rivero, 1968 (19 sp.)
- Stefania ackawaio MacCulloch and Lathrop, 2002
- Stefania ayangannae MacCulloch and Lathrop, 2002
- Stefania breweri Barrio-Amorós and Fuentes-Ramos, 2003
- Stefania coxi MacCulloch and Lathrop, 2002
- Stefania evansi (Boulenger, 1904)
- Stefania ginesi Rivero, 1968
- Stefania goini Rivero, 1968
- Stefania marahuaquensis (Rivero, 1961)
- Stefania neblinae Carvalho, MacCulloch, Bonora, and Vogt, 2010
- Stefania oculosa Señaris, Ayarzagüena, and Gorzula, 1997
- Stefania percristata Señaris, Ayarzagüena, and Gorzula, 1997
- Stefania riae Duellman and Hoogmoed, 1984
- Stefania riveroi Señaris, Ayarzagüena, and Gorzula, 1997
- Stefania roraimae Duellman and Hoogmoed, 1984
- Stefania satelles Señaris, Ayarzagüena, and Gorzula, 1997
- Stefania scalae Rivero, 1970
- Stefania schuberti Señaris, Ayarzagüena, and Gorzula, 1997
- Stefania tamacuarina Myers and Donnelly, 1997
- Stefania woodleyi Rivero, 1968
Amphibia → Anura → Hemiphractidae , Stegops † , Stereochilus , Stereocyclops
Stereospondyli von Zittel 1887
- Boreosaurus Nilsson 1943
- Brachyopomorpha Warren and Marsicano 2000
- Capitosauria Yates and Warren 2000
- Cryobatrachus Colbert and Cosgriff 1974
- Diadetognathus Miall 1874
- Kryostega Sidor et al. 2008
- Labyrinthodontia Owen, 1860
- Laccocephalus Watson 1919
- Lapillopsidae
- Lydekkerina Broom 1915
- Lydekkerinidae Watson 1919
- Mastodonsauroidea Lydekker, 1885
- Pachygonia Huxley 1865
- Peltobatrachus Panchen 1959
- Rhinesuchidae Watson 1919
- Rhytidostea Schoch and Milner 2000
- Trematosauria Yates and Warren 2000
Amphibia → Temnospondyli → Eryopiformes → Stereospondylomorpha Sterrichrotes,
Sto
, Stoschiosaurus Säve-Söderbergh, 1935 †
Str
, Strabomantidae
Strabomantis Peters, 1863 (16 sp.)
- Strabomantis anatipes (Lynch and Myers, 1983)
- Strabomantis anomalus (Boulenger, 1898)
- Strabomantis biporcatus Peters, 1863
- Strabomantis bufoniformis (Boulenger, 1896)
- Strabomantis cadenai (Lynch, 1986)
- Strabomantis cerastes (Lynch, 1975)
- Strabomantis cheiroplethus (Lynch, 1990)
- Strabomantis cornutus (Jiménez de la Espada, 1870)
- Strabomantis helonotus (Lynch, 1975)
- Strabomantis ingeri (Cochran and Goin, 1961)
- Strabomantis laticorpus (Myers and Lynch, 1997)
- Strabomantis necerus (Lynch, 1975)
- Strabomantis necopinus (Lynch, 1997)
- Strabomantis ruizi (Lynch, 1981)
- Strabomantis sulcatus (Cope, 1874)
- Strabomantis zygodactylus (Lynch and Myers, 1983)
Amphibia → Anura → Craugastoridae → Craugastorinae
Strauchbufo Fei, Ye, and Jiang, 2012 (1 sp.)
- Strauchbufo raddei (Strauch, 1876)
Amphibia → Anura → Bufonidae Strepsichrotes , Strongylopus
Stu
, Stumpffia