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IRMNG source details
Rep. Progress Geol. Surv. Canada, 1857
169445
Publication
Date action by
Cyrtodonta Billings, 1858 † (original description)
Matheria Billings, 1858 † (original description) Palaeophyllum Billings, 1858 † (original description) Phyllograpsus Logan, 1858 † (original description) Phyllograptus Hall, 1858 † (original description) Thamnograptus Hall, 1858 † (original description) |
