Agnatha Classification By Harjeet KaurPosted on 22 Jul 20199 Aug 2019Posted in Chordates, Classification, VertebrataTagged Agnatha, Anaspidiformes, Astraspis, Birkenia, Cephalaspidiformes, Cephalaspidomorphi, Cephalaspis, Hemicephalapsis, Ichthyomyzon, Lanarkia, Myxine, Myxiniformes, Northern Lamprey), Notomyxine, Petromyzon marinus, Petromyzoniformes, Pharyngolepids, Pteraspidiformes, Pteraspidomorphi, Pteraspis, sea lamprey, Thelodontiformes, Thelodus Fishes Classification Vertebrate Classification