After “The Tree of Life”, and Grimaldi & Engel, 2005

<==o †Titanoptera Sharov, 1968 [Mesotitanida]
   |?- †Clatrotitan andersoni [Clatrotitanidae Riek, 1954]
   |--o †Paratitanidae Sharov, 1968
   |  |-- †Minititan Gorochov, 2007 [Mesotitan Gorochov, 2003 [nec Microtitan ]
   |  `-- †Paratitan Sharov, 1968
   |--o †Gigatitanidae
   |  |-- †Gigatitan
   |  |-- †Nanotitan
   |  `-- †Ootitan
   |?-o †Tcholmanvissioidea Zalessky, 1934
   |  |--o †Mesotitanidae Tillyard, 1925
   |  |  |-- †Prototitan
   |  |  |-- †Mesotitanodes Sharov, 1968
   |  |  |-- †Ultratitan Sharov, 1968
   |  |  |-- †Deinotitan orenburgensis Gorochov 2007; L.Perm. [Deinotitaninae Gorochov 2007]
   |  |  |-- †Jubilaeus Sharov, 1968 [Jubilaeinae Béthoux, 2007]
   |  |  `--o †Mesotitaninae Tillyard, 1925 [Gigatitanidae Sharov, 1968]
   |  |     |-- †Tcholmanvissiella gigantea Gorochov, 1987 †Tcholmanvissiellini Béthoux, 2007
   |  |     `--o †Mesotitanini Tillyard, 1925
   |  |        |--o †Gigatitan Sharov, 1968
   |  |        |  |-- †G. ovatus Sharov, 1968
   |  |        |  |-- †G. similis Sharov, 1968
   |  |        |  `-- †G. vulgaris Sharov, 1968
   |  |        |-- †Mesotitan giganteus Tillyard, 1925 [Clatrotitan McKeown, 1937]
   |  |        |--o †Nanotitan Sharov, 1968
   |  |        |  |-- †G. extentus Sharov, 1968
   |  |        |  `-- †G. magnificus Sharov, 1968
   |  |        `-- †Ootitan curtis Sharov, 1968
   |  `--o †Tcholmanvissiidae Zalessky, 1934
   |     |-- †Pinegia Martynov, 1928
   |     `-- †Tcholmanvissia Zalessky, 1929
   `?-o †Tettoedischioidea Gorochov, 1987
      `--o †Tettoedischiidae Gorochov, 1987
         |-- †Macroedischia Sharov, 1968
         `-- †Tettoedischia Sharov, 1968

Reference(s):