URMO Taxon list
Anarthroclada parmata Naumov, 1955
Antennella africana Broch, 1914 accepted as Antennella quadriaurita Ritchie, 1909
Antennella allmani Armstrong, 1879 (uncertain > taxon inquirendum )
Antennella ansini Peña Cantero & García Carrascosa, 2002
Antennella avalonia Torrey, 1902
Antennella biarmata Nutting, 1927
Antennella billardi Galea, 2021
Antennella campanulaformis (Mulder & Trebilcock, 1909)
Antennella compacta Fraser, 1938 (uncertain > taxon inquirendum )
Antennella confusa Ansin Agis, Ramil & Vervoort, 2001
Antennella curvitheca Fraser, 1937
Antennella integerrima (Jäderholm, 1896) accepted as Antennellopsis integerrima Jäderholm, 1919
Antennella kiwiana Schuchert, 1997
Antennella microscopica (Mulder & Trebilcock, 1909) (uncertain > taxon inquirendum )
Antennella quadriaurita Ritchie, 1909
Antennella recta Nutting, 1927
Antennella ritchiei Totton, 1930 accepted as Corhiza scotiae (Ritchie, 1907)
Antennella secundaria (Gmelin, 1791)
Antennella serrata Totton, 1930 accepted as Antennella quadriaurita Ritchie, 1909
Antennella sibogae (Billard, 1911)
Antennella siliquosa (Hincks, 1877)
Antennella tubulosa (Bale, 1894)
Antennella variabilis Fraser, 1936 accepted as Antennella quadriaurita Ritchie, 1909
Antennella varians (Billard, 1911)
Antennellopsis dofleini Stechow, 1908 accepted as Antennellopsis integerrima Jäderholm, 1919
Antennellopsis integerrima Jäderholm, 1919
Astrolabia furcata (Fraser, 1937)
Astrolabia heterotheca Naumov, 1955
Calvinia mirabilis Nutting, 1900
Corhiza bellicosa Millard, 1962
Corhiza complexa (Nutting, 1906)
Corhiza fascicularis (Allman, 1883)
Corhiza mortenseni Millard, 1968 accepted as Corhiza complexa (Nutting, 1906)
Corhiza pannosa Millard, 1962
Corhiza scotiae (Ritchie, 1907)
Corhiza sociabilis Millard, 1980
Corhiza splendens Vervoort & Watson, 2003
Corhiza suensoni (Jäderholm, 1896)
Diplopteroides grandis (Nutting, 1900)
Diplopteroides longipinna (Nutting, 1900)
Diplopteroides quadricornis (Nutting, 1900)
Gattya aglaopheniaformis (Mulder & Trebilcock, 1909)
Gattya balei (Bartlett, 1907)
Gattya conspecta (Billard, 1907)
Gattya heurteli (Billard, 1907)
Gattya humilis Allman, 1885
Gattya multithecata (Jarvis, 1922)
Gattya trebilcocki Watson, 1973
Gattya tropicalis Millard & Bouillon, 1973
Gattya wimleni Gravier-Bonnet, 1998
Halopteris alternata (Nutting, 1900)
Halopteris billardi (Vannucci, 1951)
Halopteris buskii (Bale, 1884) accepted as Halopteris glutinosa (Lamouroux, 1816)
Halopteris campanula (Busk, 1852)
Halopteris carinata Allman, 1877
Halopteris catharina (Johnston, 1833)
Halopteris clarkei (Nutting, 1900)
Halopteris concava (Billard, 1911)
Halopteris constricta Totton, 1930 accepted as Halopteris minuta (Trebilcock, 1928)
Halopteris crassa (Billard, 1911)
Halopteris diaphana (Heller, 1868)
Halopteris diaphragmatica (Billard, 1911)
Halopteris enersis Galea, 2006
Halopteris everta (Mulder & Trebilcock, 1909)
Halopteris gemellipara Millard, 1962
Halopteris geminata (Allman, 1877)
Halopteris glutinosa (Lamouroux, 1816)
Halopteris gracilis (Clarke, 1879) accepted as Halopteris clarkei (Nutting, 1900)
Halopteris heterogona (Bale, 1924) accepted as Halopteris crassa (Billard, 1911)
Halopteris infundibulum Vervoort, 1966
Halopteris jedani (Billard, 1913)
Halopteris liechtensternii (Marktanner-Turneretscher, 1890)
Halopteris minuta (Trebilcock, 1928)
Halopteris opposita (Mulder & Trebilcock, 1911)
Halopteris peculiaris (Billard, 1913)
Halopteris plagiocampa (Pictet, 1893)
Halopteris platygonotheca Schuchert, 1997
Halopteris polymorpha (Billard, 1913)
Halopteris prominens Vervoort & Watson, 2003
Halopteris pseudoconstricta Millard, 1975
Halopteris regressa (Billard, 1918) (uncertain > taxon inquirendum )
Halopteris rostrata Millard, 1975
Halopteris schucherti Galea, 2006
Halopteris simplex (Warren, 1914)
Halopteris tenella (Verrill, 1874)
Halopteris tuba (Kirchenpauer, 1876)
Halopteris valdiviae (Stechow, 1923) accepted as Thamnopteros valdiviae (Stechow, 1923)
Halopteris violae Calder, Mallinson, Collins & Hickman, 2003
Halopteris zygocladia (Bale, 1914) accepted as Halopteris campanula (Busk, 1852)
Heteroplon valdiviae Stechow, 1923 accepted as Thamnopteros valdiviae (Stechow, 1923)
Monostaechas faurei Millard, 1958
Monostaechas fisheri Nutting, 1906
Monostaechas natalensis Millard, 1958
Monostaechas providentiae (Jarvis, 1922) accepted as Monostaechoides providentiae (Jarvis, 1922)
Monostaechas quadridens (McCrady, 1859)
Monostaechas sibogae Billard, 1913
Monostaechoides providentiae (Jarvis, 1922)
Nuditheca dallii (Clark, 1877)
Nuditheca dogieli Naumov, 1952
Nuditheca tetrandra Naumov, 1960