Dodatak:Popis vrsta vodozemaca, Os
Os
urediOscaecilia Taylor, 1968
uredi- Oscaecilia bassleri (Dunn, 1942)
- Oscaecilia elongata (Dunn, 1942)
- Oscaecilia equatorialis Taylor, 1973
- Oscaecilia hypereumeces Taylor, 1968
- Oscaecilia koepckeorum Wake, 1984
- Oscaecilia ochrocephala (Cope, 1866)
- Oscaecilia osae Lahanas and Savage, 1992
- Oscaecilia polyzona (Fischer, 1880)
- Oscaecilia zweifeli Taylor, 1968
Amphibia → Gymnophiona → Caeciliidae
Osornophryne Ruiz-Carranza and Hernández-Camacho, 1976 (11 sp.)
uredi- Osornophryne angel Yánez-Muñoz, Altamirano-Benavides, Cisneros-Heredia, and Gluesenkamp, 2011
- Osornophryne antisana Hoogmoed, 1987
- Osornophryne bufoniformis (Peracca, 1904)
- Osornophryne cofanorum Mueses-Cisneros, Yánez-Muñoz, and Guayasamin, 2010
- Osornophryne guacamayo Hoogmoed, 1987
- Osornophryne occidentalis Cisneros-Heredia and Gluesenkamp, 2011
- Osornophryne percrassa Ruiz-Carranza and Hernández-Camacho, 1976
- Osornophryne puruanta Gluesenkamp and Guayasamin, 2008
- Osornophryne simpsoni Páez-Moscoso, Guayasamin, and Yánez-Muñoz, 2011
- Osornophryne sumacoensis Gluesenkamp, 1995
- Osornophryne talipes Cannatella, 1986
Osteocephalus Steindachner, 1862 (23 sp.)
uredi- Osteocephalus alboguttatus (Boulenger, 1882)
- Osteocephalus buckleyi (Boulenger, 1882)
- Osteocephalus cabrerai (Cochran and Goin, 1970)
- Osteocephalus cannatellai Ron, Venegas, Toral, Read, Ortiz, and Manzano, 2012
- Osteocephalus carri (Cochran and Goin, 1970)
- Osteocephalus castaneicola Moravec, Aparicio, Guerrero-Reinhard, Calderón, Jungfer, and Gvoždík, 2009
- Osteocephalus deridens Jungfer, Ron, Seipp, and Almendáriz, 2000
- Osteocephalus duellmani Jungfer, 2011
- Osteocephalus festae (Peracca, 1904)
- Osteocephalus fuscifacies Jungfer, Ron, Seipp, and Almendáriz, 2000
- Osteocephalus helenae (Ruthven, 1919)
- Osteocephalus heyeri Lynch, 2002
- Osteocephalus leoniae Jungfer and Lehr, 2001
- Osteocephalus leprieurii (Duméril and Bibron, 1841)
- Osteocephalus mimeticus (Melin, 1941)
- Osteocephalus mutabor Jungfer and Hödl, 2002
- Osteocephalus oophagus Jungfer and Schiesari, 1995
- Osteocephalus planiceps Cope, 1874
- Osteocephalus subtilis Martins and Cardoso, 1987
- Osteocephalus taurinus Steindachner, 1862
- Osteocephalus verruciger (Werner, 1901)
- Osteocephalus vilarsi (Melin, 1941)
- Osteocephalus yasuni Ron and Pramuk, 1999
Amphibia → Anura → Hylidae → Hylinae , Osteophorus †
Osteopilus Fitzinger, 1843 (8 sp.)
uredi- Osteopilus crucialis (Harlan, 1826) ugrožena vrsta
- Osteopilus dominicensis (Tschudi, 1838)
- Osteopilus marianae (Dunn, 1926) ugrožena vrsta
- Osteopilus ocellatus (Linnaeus, 1758)
- Osteopilus pulchrilineatus (Cope, 1870) ugrožena vrsta
- Osteopilus septentrionalis (Duméril and Bibron, 1841) invazivna vrsta
- Osteopilus vastus (Cope, 1871) ugrožena vrsta
- Osteopilus wilderi (Dunn, 1925) ugrožena vrsta