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Ridersiidae
Taxonomy
Ridersiidae was named by Jell et al. (1985). It is not extant. Its type is Ridersia.
It was assigned to Eocrinoidea by Jell et al. (1985).
It was assigned to Eocrinoidea by Jell et al. (1985).
Subtaxa
Ridersia (type genus)