Sub-Family uncertain Genus Myxineidus♂ POPLIN, SOTTY & JANVIER 2001 ミキシネイドゥス属 (絶滅)
◆ミキシネイドゥス・ゴノノルス (絶滅) †Myxineidus gononorus Poplin, Sotty & Janvier 2001 *2001『Un Myxinoïde [Craniata, Hyperotreti] dans le Konservat-Lagerstätte Carbonifère Supérieur de Montceau-les-Mines, Allier, France:Cécile Poplin, Daniel Sotty & Philippe Janvier』。 *2014『The Presumed Hag-Fish Myxineidus gononorum from the Upper Carboniferous of Montceau-les-Mines, Saone-et-Loire, France, New Data Obtained by Means of Propagation Phase Contrast X-Ray Synchrotron Microtomography:Philippe Janvier』。 *2020『A Paleozoic Stem Hag-Fish Myxinikela siroka Revised Anatomy and Implications for Evolution of the Living Jawless Vertebrate Lineages:Tetsuto Miyashita』。
Sub-Family uncertain Genus Myxinikela♀ BARDACK 1991 ミキシニケラ属 (絶滅)
◆ミキシニケラ・シロカ (絶滅) †Myxinikela siroka Bardack 1991 *1991『First Fossil Hag-Fish [Myxinoidea], a Record from the Pennsylvanian of Illinois:David Bardack』。 *1998『The Biology of Hag-Fishes:Jørgen Mørup Jørgensen, Jens Peter Lomholt, Roy E.Weber & Hans Malte』。 *2016『Fossil Hag-Fishes, Fossil Cyclostomes, and the Lost World of Ostracoderms:Philippe Janvier & Robert Stephen Sansom』。 *2020『A Paleozoic Stem Hag-Fish Myxinikela siroka Revised Anatomy and Implications for Evolution of the Living Jawless Vertebrate Lineages:Tetsuto Miyashita』。