Goniothyridinae
Psebajithyridinae
Heterobrochinae
Loboidothyrididae
(tree size 4)
Lobothyrididae
(tree size 2)
Lissajousithyrididae
(tree size 4)
Boreiothyrididae
Muirwoodellidae
(tree size 3)
Plectoconchidae
Harpotothyrididae
Hesperithyrididae
Tchegemithyrididae
(tree size 2)
Tegulithyrididae
Mametothyrididae
Cheniothyrididae
Spasskothyrididae
Trigonithyrididae
Cheirothyropsidae
Dienopidae
Alabushevothyrididae
Clathrithyrididae
Triadithyrididae