Classification of Harper and Donovan 2007

G. Argyrotheca Dall 1900
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†Argyrotheca barrettiana Davidson 1866
G. Terebratulina d'Orbigny 1847
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†Terebratulina manchionealensis Harper and Donovan 2007
Subfm. Tichosininae Cooper 1983
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G. Tichosina Cooper 1977
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†Tichosina inconstanta Harper and Donovan 2007