New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian and Lower Devonian of the Canadian Arctic Archipelago

New vertebrate taxa of Silurian and Early Devonian age from the Canadian Arctic Archipelago are established. Diagnoses, type designations, and illustrations are given for 25 new species of thelodonts and 2 new species tentatively referred to chondrichthyans. In addition, 10 new genera, 6 new families, and 1 new order of thelodonts, and 1 new family and 2 new genera of possible chondrichtyans are established. Full monographic description of all available material will be published shortly