Classification of the phylum Calcispongea
Cl. †Calcispongiae
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Or. †Faretronida Zittel 1878
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Fm. †Discocoelidae de Laubenfels 1955
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G. †Discocoeila de Laubenfels 1955
G. †Discocoelia de Laubenfels 1955
G. †Gaspespongia