Penicillata Latrielle, 1831

Álvarez-Rodríguez, Michelle, Riquelme, Francisco, Hernández-Patricio, Miguel & Magaña, Fabio Cupul-, 2024, Diplopoda in the world fossil record, Zoological Systematics 49 (3), pp. 185-245 : 231-232

Subclass Penicillata Latrielle, 1831 (1 order)

Order Polyxenida Verhoeff, 1934 (2 superfamilies)

Superfamily Polyxenoidea Lucas, 1840 (2 families) Family Polyxenidae Lucas, 1840 (1 subfamily, 2 genera) † Genus Electroxenus Nguyen Duy-Jacquemin & Azar, 2004 (1 species) † Electroxenus jezzinensis Nguyen Duy-Jacquemin & Azar 2004 † Genus Libanoxenus Nguyen Duy-Jacquemin & Azar, 2004 (1 species) † Libanoxenus hammanaensis Nguyen Duy-Jacquemin & Azar, 2004 Subfamily Polyxeninae Lucas, 1840 (2 genera) Genus Polyxenus Latrielle, 1802 (6 species) † Polyxenus caudatus Menge, 1854 † Polyxenus colurus Menge, 1854 † Polyxenus coniformis Koch & Berendt, 1854 † Polyxenus lophurus Menge, 1854 † Polyxenus miocenica Srivastava et al., 2006 † Polyxenus ovalis Koch & Berendt, 1854 Genus Propolyxenus Silvestri, 1948 Subfamily Monographinae Condé, 2008 (2 genera) Genus Pauropsxenus Silvestri, 1948 (2 species) † Pauropsxenus extraneus Su et al., 2020

† Pauropsxenus ordinatus Su et al., 2020

Genus Unixenus Jones, 1944

Family Lophoproctidae Silvestri, 1897 (1 genus)

Genus Lophoproctus Pocock, 1894

Superfamily Synxenoidea Silvestri, 1923 (1 family)

Family Synxenidae Silvestri, 1923 (1 genus)

Genus Phryssonotus Scudder, 1885 (2 species)

† Phryssonotus hystrix ( Menge, 1854)

† Phryssonotus burmiticus ( Cockerell, 1917)