Sphaeromatidae Latreille, 1825
Isocladus armatus (H. Milne Edwards, 1840)
Isocladus bahamondei Carvacho, 1997
Isocladus calcareus (Dana, 1853)
Isocladus dulciculus Hurley & Jansen, 1977
Isocladus excavatus (Baker, 1910)
Isocladus falcifer (Dana, 1853)
Isocladus howensis Baker, 1926A
Isocladus inaccuratus Hurley & Jansen, 1977
Isocladus indicus Nierstrasz, 1930
Isocladus integra (Heller, 1868)
Isocladus laevis (Haswell, 1881)
Isocladus magellanensis Richardson, 1906B
Isocladus mimetes Barnard, 1955
Isocladus otion Barnard, 1955
Isocladus reconditus Hurley & Jansen, 1977
Isocladus spiculatus Hurley & Jansen, 1977
Isocladus spiniger (Dana, 1853)
Isocladus tristense (Leach, 1818)
