Classification of the family Plethospiridae
Fm. †Plethospiridae Wenz 1938
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G. †Kirkospira Rohr and Blodgett 2001
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†Kirkospira glacialis Rohr and Blodgett 2001
†Kirkospira lindstroemi Oehlert and Oehlert 1888
†Kirkospira tongassensis Rohr and Blodgett 2008
†Kirkospira vitellia Billings 1865
Invalid names: Baichtalia Rohr and Blodgett 2008 [synonym]
G. †Wortheniopsis Böhm 1895
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†Wortheniopsis acuta Nützel et al. 2018
†Wortheniopsis margarethae Kittl 1894
Invalid names: Murchisonietta Nützel et al. 2018 [synonym]
Invalid names: Plethospirinae Wenz 1938 [empty]