Classification of Ulrich and Bassler 1904
Or. Cheilostomata Busk 1859
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Fm. Membraniporidae Busk 1854
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G. Amphiblestrum Gray 1848
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†Amphiblestrum agellus Ulrich and Bassler 1904
†Amphiblestrum constrictum Ulrich and Bassler 1904
G. Membranipora Blainville 1834
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†Membranipora bifoliata Ulrich and Bassler 1904
†Membranipora caminosa Ulrich and Bassler 1904
†Membranipora fistula Ulrich and Bassler 1904
†Membranipora fossulifera Ulrich and Bassler 1904
†Membranipora germana Ulrich and Bassler 1904
†Membranipora nitidula Ulrich and Bassler 1904
†Membranipora oblongula Ulrich and Bassler 1904
†Membranipora parvula Ulrich and Bassler 1904
Unr. †Molluscoidea
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Cl. Bryozoa Ehrenberg 1831 [bryozoan]
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Or. Chilostomata Busk 1859
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Fm. Celleporidae Busk 1852
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Fm. †Lepraliidae
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G. Lepralia
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†Lepralia maculata Ulrich and Bassler 1904
†Lepralia marylandica Ulrich and Bassler 1904
†Lepralia montifera Ulrich and Bassler 1904
†Lepralia reversa Ulrich and Bassler 1904
G. Palmicellaria Alder 1864
Fm. †Microporellidae
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G. Microporella Hincks 1877
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†Microporella bifoliata Ulrich and Bassler 1904
†Microporella inflata Ulrich and Bassler 1904
†Microporella praeciliata Ulrich and Bassler 1904
Fm. Schizoporellidae Jullien 1883
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G. Retepora
G. Schizoporella Hincks 1877
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†Schizoporella cumulata Ulrich and Bassler 1904
†Schizoporella informata Lonsdale 1845
†Schizoporella latisinuata Ulrich and Bassler 1904
†Schizoporella subquadrata Ulrich and Bassler 1904
Or. †Cyclostomata Busk 1852
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Invalid names: Fascigeridae [empty]