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.

Families and genera

Family †Choiidae Laubenfels, 1925
* Genus †Allantospongia Rigby & Hou, 1995
* Genus †Choia Walcott, 1920
* Genus †Choiaella Rigby & Hou, 1995
* Genus †Lenica Goryanskiy, 1977
* Genus †Neochoiaella Keupp & Schweigert, 2012
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 †Pseudoleptomitus Botting et al., 2019
* 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