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Opokiellidae
Taxonomy
Opokiellidae was named by Kanev (1983). It is not extant.
It was assigned to Anthracosioidea by Bouchet et al. (2010); and to Opokielloidea by Silantiev (2018).
It was assigned to Anthracosioidea by Bouchet et al. (2010); and to Opokielloidea by Silantiev (2018).