Classification of the genus Kirkbya
G. †Kirkbya Jones 1859
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†Kirkbya atolla Ishizaki 1964
†Kirkbya bellula Chen 1958
†Kirkbya bendensis Harlton 1933
†Kirkbya buekkensis Kozur 1985
†Kirkbya canyonformis Hou 1954
†Kirkbya centrotumida Ishizaki 1964
†Kirkbya clarocarinata Knight 1928
†Kirkbya firma Kellett 1933
†Kirkbya fossilcliffi Ferdinando 2001
†Kirkbya knuepferi Kozur 1985
†Kirkbya lindahli Ulrich 1891
†Kirkbya magniforma Ishizaki 1964
†Kirkbya mingenewensis Ferdinando 2001
†Kirkbya moorei Kellett 1933
†Kirkbya multicresta Ishizaki 1964
†Kirkbya pergrandis Kellett 1933
†Kirkbya punctata Kellett 1933
†Kirkbya rara Khivintseva 1969
†Kirkbya reflexa Girty 1910
†Kirkbya sinensis Hou 1954
†Kirkbya subnipponica Ishizaki 1964
†Kirkbya subquadriforma Ishizaki 1964
†Kirkbya unnoda Wang 1978
†Kirkbya valida Kellett 1933