Classification of Henningsmoen 1952

Cl. Hexactinellida Schmidt 1870 [glass sponge]
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Fm. †Chancelloriidae Walcott 1920
Fm. †Protospongidae Hinde 1887
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G. †Protospongia Salter 1864
Or. †Neotremata Beecher 1891
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Superfm. †Acrotretacea Schuchert 1893
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Fm. †Acrotretidae Schuchert 1893
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G. †Acrothele Linnarsson 1876
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Subg. †Acrothele (Redlichella) Walcott 1908
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G. †Acrotreta Kutorga 1848
Fm. †Hyolithidae Nicholson 1889
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G. †Hyolithes d'Eichwald 1840
G. †Orthotheca Novak 1886
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†Orthotheca teretiuscula Linnarsson 1877
Superfm. †Redlichiacea Richter 1932
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Fm. †Paradoxididae Emmrich 1839
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Invalid names: Paradoxidinae Emmrich 1839 [empty]
Superfm. †Conocoryphacea Swinnerton 1915
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Fm. †Conocoryphidae Angelin 1854
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Subfm. †Ptychopariinae Matthew 1887
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G. †Ptychoparia Corda 1847
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†Ptychoparia anderseni Henningsmoen 1952
†Ptychoparia striatus Emmrich 1839
Or. †Protremata Beecher 1891
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Superfm. †Orthacea Woodward and Schuchert 1852
Or. †Atremata Beecher 1891
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Invalid names: Obolacea Schuchert 1896 [empty]
Superfm. †Agnostacea Salter 1864
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Fm. †Agnostidae M'Coy 1849
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Invalid names: Peronopsinae Westergard 1936 [empty]
Fm. †Chancelloridae Walcott 1920
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G. †Chancelloria Walcott 1920