Classification of Desbiens et al. 1996

G. †Ribeiria Sharpe 1853
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Ribeiria calcifera Billings 1865
G. †Archinacella Ulrich and Scofield 1897
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Archinacella simplex Billings 1865
G. †Ceratopea Ulrich 1911
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Ceratopea canadensis Billings 1865
Ceratopea unguis Yochelson and Bridge 1957
G. †Lecanospira Butts 1926
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Lecanospira compacta Salter 1859
G. †Maclurites Le Sueur 1818
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Maclurites affinis Billings 1865
Maclurites crenulatus Billings 1865
Maclurites oceana Billings 1865
G. †Goniotelina Whittington and Ross 1953
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Goniotelina moorei Raymond 1913
Subg. †Murchisonia (Hormotoma) Salter 1859
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Hormotoma artemesia Billings 1865