Classification of Muir-Wood 1928

G. Discinisca Gray 1840
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†Discinisca holdeni Tate 1867
G. †Gibbirhynchia Buckman 1917
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†Gibbirhynchia curviceps Quenstedt 1852
G. †Piarorhynchia Buckman 1917
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†Piarorhynchia fronto Quenstedt 1871
G. †Rudirhynchia Buckman 1917
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†Rudirhynchia calcicosta Quenstedt 1852
†Rudirhynchia fallax Deslongchamps 1863
G. †Cincta
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†Cincta nummata Buckman 1907
†Cincta nummosa Buckman 1907
†Cincta nummus Buckman 1907
†Cincta opulenta Buckman 1907
†Cincta paupercula Buckman 1907
†Cincta pernumismalis Buckman 1907
†Cincta sestertius Buckman 1907
G. †Lobothyris Buckman 1917
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†Lobothyris ovulum Quenstedt 1858
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†Ornithella sarthacensis d'Orbigny 1850
G. †Tropiorhynchia Buckman 1917
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†Tropiorhynchia thalia d'Orbigny 1850