Classification of the genus Psalikilus
G. †Psalikilus Ross 1951
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†Psalikilus hestoni Adrain et al. 2009
†Psalikilus paraspinosum Hintze 1953
†Psalikilus pikum Hintze 1953
†Psalikilus spinosum Hintze 1953
†Psalikilus typicum Ross 1951