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IRMNG source details
Geol. surv. Canada, Cat. silur. Foss. Anticosti
88640
Publication
Date action by
Betricea Billings, 1866 † accepted as Aulacera Plummer, 1843 † (original description)
Ischyrinia Billings, 1866 † (original description) Streptoceras Billings, 1866 † (original description) |
