Classification of the family Onychasteridae
Fm. †Onychasteridae Miller 1889
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G. †Onychaster Meek and Worthen 1868
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†Onychaster asper Miller 1892
†Onychaster barrisi Hall 1861
†Onychaster flexilis Meek and Worthen 1868
†Onychaster strimplei Bjork et al. 1968
†Onychaster velbertensis Haude and Thomas 1983