Protomonaxonida
Protomonaxonida is an extinct order of sea sponges. It is a paraphyletic group gathering the most ancient species from the Burgess Shale to modern sponges.- Family †Choiidae Laubenfels, 1925
- * Genus †Allantospongia Rigby & Hou, 1995
- * Genus †Choia Walcott, 1920
- * Genus †Choiaella Rigby & Hou, 1995
- * Genus †Lenica Goryanskiy, 1977
- Family †Halichondritidae Rigby, 1986
- * Genus †Halichondrites Walcott, 1920
- * Genus †Pohlispongia Rigby & von Bitter, 2005
- Family †Hamptoniidae De Laubenfels, 1955
- * Genus †Hamptonia Walcott, 1920
- * Genus †Hamptoniella Rigby & Collins, 2004
- Family †Hazeliidae De Laubenfels, 1955
- * Genus †Crumillospongia Rigby, 1986
- * Genus †Falospongia Rigby, 1986
- * Genus †Hazelia Walcott, 1920
- Family †Leptomitidae De Laubenfels, 1955
- * Genus †Leptomitus Walcott, 1886
- * Genus †Paraleptomitella Chen et al., 1989
- * Genus †Wareiella Rigby & Harris, 1979
- Genus †Lobatospongia Rigby et al., 2007
- Family †Piraniidae De Laubenfels, 1955
- * Genus †Moleculospina Rigby, 1986
- * Genus †Pirania Walcott, 1920
- Family †Takakkawiidae De Laubenfels, 1955
- * Genus †Takakkawia Walcott, 1920
- Family †Ulospongiellidae Rigby & Collins, 2004
- * Genus †Hapalospongia Rigby & Collins, 2004
- * Genus †Ulospongiella Rigby & Collins, 2004
- Family †Wapkiidae De Laubenfels, 1955
- * Genus †Wapkia Walcott, 1920
The following families from the order Hadromerida are also sometimes placed in Protomonaxonida:
- Family Sollasellidae von Lendenfeld, 1887
- * Genus †Luterospongia Rigby et al., 2008
- * Genus †Mckittrickella Rigby et al., 2007
- * Genus †Monaxoradiata Rigby & Bell, 2006
- * Genus †Opetionella Zittel, 1878
- * Genus †Rhizopsis Schrammen, 1910
- * Genus †Stramentella Gerasimov, 1960
- * Genus †Trichospongiella Rigby, 1971
- Family Tethyidae Gray, 1867
- * Genus Tethya Lamarck, 1814
