Classification of the subfamily Institellinae
Subfm. †Institellinae Muir-Wood and Cooper 1960
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G. †Costellarina Cooper and Muir-Wood 1967
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†Costellarina carlstroemi Yancey 1978
†Costellarina costellata Muir-Wood and Cooper 1960
†Costellarina kaasai Yancey 1978
†Costellarina mitriforma Yang 1991
†Costellarina plasi Yancey 1978
Invalid names: Costellaria Muir-Wood and Cooper 1960 [replaced]
G. †Craspedona Cooper and Grant 1975
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†Craspedona limbata Girty 1908
†Craspedona newelli Cooper and Grant 1975
G. †Glyptosteges Cooper and Grant 1975
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†Glyptosteges angustus King 1931
†Glyptosteges insculptus Cooper and Grant 1975
†Glyptosteges intricatus Cooper and Grant 1975
†Glyptosteges percostatus Waterhouse 1983
†Glyptosteges sulcatus Cooper and Grant 1975
G. †Institella Cooper 1942
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†Institella gubleri Termier and Termier 1970
†Institella leonardensis King 1931
G. †Institina
G. †Retroplexus
G. †Sinuatella Muir-Wood 1928
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†Productus (Sinuatella) celsus Reed 1944
†Sinuatella griffithiana de Koninck 1847
†Sinuatella sinuata de Koninck 1851
Invalid names: Costellariinae Muir-Wood and Cooper 1960 [synonym], Licharewiconchidae Kotlyar et al. 2004 [synonym], Sinuatellidae Muir-Wood and Cooper 1960 [synonym]