Phascolosomatidae Stephen & Edmonds, 1972
Phascolosoma agassizii Keferstein, 1866
Phascolosoma albolineatum Baird, 1868
Phascolosoma ambiguum (Brandt, 1835)
Phascolosoma annulatum Hutton, 1879
Phascolosoma arcuatum (Gray, 1828)
Phascolosoma capitatum (Gerould, 1913)
Phascolosoma carneum Leuckart & Rnppell, 1828
Phascolosoma constellatum (Quatrefages, 1865)
Phascolosoma corallicolum (ten Broeke, 1925)
Phascolosoma demanni (Sluiter, 1891)
Phascolosoma exasperatum Stimpson, 1865
Phascolosoma falcidentatum (Sluiter, 1882)
Phascolosoma fasciolatum (Baird, 1835)
Phascolosoma glabrum (Sluiter, 1902)
Phascolosoma granulatum Leuckart, 1828
Phascolosoma leachii (de Blainville, 1827)
Phascolosoma lobostomum W. Fischer, 1895
Phascolosoma loricatum (Quatrefages, 1865)
Phascolosoma maculatum (Sluiter, 1886)
Phascolosoma mauritaniense (HTrubel, 1924)
Phascolosoma meteori (HTrubel, 1904)
Phascolosoma nigritorquatum (Sluiter, 1881)
Phascolosoma noduliferum Stimpson, 1855
Phascolosoma nordfolcense (Brandt, 1835)
Phascolosoma pacificum Keferstein, 1866
Phascolosoma (Phascolosoma) parvum Chen, 1963
Phascolosoma placostegi Baird, 1868
Phascolosoma pourtalesi (PourtalFs, 1851)
Phascolosoma puntarenae Grnbe & Oersted, 1858
Phascolosoma pygmaeum (Quatrefages, 1865)
Phascolosoma rueppellii Grnbe, 1868
Phascolosoma saprophagicum Gibbs, 1987
Phascolosoma semicinctum Stimpson, 1855
Phascolosoma (Phascolosoma) sinense Chen, 1963
Phascolosoma stephensoni (Stephen, 1942)
Phascolosoma turnerae Rice, 1985
Phascolosoma vermiculum (Quatrefages, 1865)
Physcosoma ruppelli
