Classification of Wilson 1949

G. †Bellerophon de Montfort 1808
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†Bellerophon troosti de Ferrusac and d'Orbigny 1840
G. †Cyclonema Hall 1852
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†Cyclonema varicosum Hall 1861
G. †Liospira Ulrich and Scofield 1897
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†Liospira convexa Ulrich and Scofield 1897
†Liospira decipiens Ulrich and Scofield 1897
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†Cyrtoceras convidale Wetherby 1881
G. †Byssonychia Ulrich 1893
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†Byssonychia intermedius Meek and Worthen 1868
G. †Ceraurinus Barton 1913
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†Ceraurinus scofieldi Clarke 1897
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†Goniotrypa bilateralis Ulrich 1889
G. †Stictopora Hall 1847
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†Stictopora fragilis Billings 1866
Ph. Brachiopoda Cuvier 1805 [lamp shell]
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G. †Pianodema Foerste 1912
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†Pianodema stonensis Safford 1869
†Pianodema subaequata Conrad 1843
G. †Rafinesquina Hall and Clarke 1892
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†Rafinesquina ponderosa Hayes and Ulrich 1903
G. †Scenidium
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†Scenidium anthonense Sardeson 1894