Classification of the genus Coptothyris

G. Coptothyris Jackson 1918
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Coptothyris adamsi Davidson 1871
†Coptothyris excelsa Yokoyama 1923
†Coptothyris excelsa koyamai Makiyama 1927
Coptothyris grayi Davidson 1852
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Invalid names: Terebratalia koyamai Makiyama 1927 [synonym]
Invalid names: Pseudesia Dall 1920 [synonym], Thomsonia Jackson 1916 [replaced]