Subphylum [Vertebrata] Cuvier, 1812 - vertebrates Count: [†*] 2c; †5o;18f;32g;35s Class Agnatha Cope, 1889 Count: [†*] †5o;16f;29g;33s Subclass †Thelodonti Kiaer, 1932 Count: [†*] †5o;16f;29g;33s Order †Loganelliiformes Turner, 1991 Count: [†*] †2f;3g;5s Family †Loganelliidae Karatajūtė-Talimaa, 1997 Count: [†*] †2g;4s Genus †Loganelliaᵀ Turner, 1991 Count: [†*] †3s †Loganellia prolata Märss, Wilson & Thorsteinsson, 2002 Count: -