New Taxa of Spiriferids from the Pragian Deposits (Lower Devonian) of Northeast Eurasia

New taxa of spiriferids of the subfamily Howellellinae are described from the Lower Devonian deposits of North-East Eurasia: Howellella (Howellella) septentrionalis Baranov and Nikolaev, sp. nov. H. (Howellella) nelyudimica Baranov and Nikolaev, sp. nov., and the subfamily Callispiriferinae Johnson, 1994—Dubatolovispirifer Baranov and Nikolaev, gen. nov. with the type species D. ribbed Nikolaev et Baranov, sp. nov.