After “The Tree of Life”, Grimaldi & Engel, 2005, and Gorochov, Jarzembowski & Coram, 2006

<==o Orthoptera Olivier, 1789 [Saltatoria] (suorasiipiset; long-horn grasshoppers, crickets, katydids, etc.) 
   |==o †Protorthoptera in partim
   |  `==Oedischiidea Handlirsch, 1906
   |==o Ensifera Chopard, 1920 (pitkäsarviset; crickets, katydids and weta) [paraphyletic?]
   |  |?- †Phasmomimidae Sharov, 1968
   |  |?- †Proparagryllacrididae
   |  |--o Tettigonioidea Stol, 1788 [Tettigoniidea Stol, 1788] [incl. Stenopelmatoidea and Hagloidea] (hepokattimaiset pitkäsarviset)
   |  |  |?- Anostostomatidae Saussure, 1859
   |  |  |-- Rhaphidophoridae (hyppysirkat; camel crickets & cave crickets (cave weta))
   |  |  `--+-- Gryllacrididae Blanchard, 1845 (leaf-rolling & raspy crickets)
   |  |     `--+--o Cooloolidae (wetat; cooloola monsters)
   |  |        |  `-- Cooloola
   |  |        `--+-- Stenopelmatidae Burmeister, 1838 (jerusalem & king crickets, tree & giant weta)
   |  |           `--+-- Tettigoniidae Stol, 1788 [incl. Microtettigoniidae] (Katydids, Long-horned Grasshoppers and Bushcrickets; hepokatit)
   |  |              `--o Hagloidea Handlirsch, 1906 sensu Gorochov, Jarzembowski & Coram, 2006 [Haglidae sensu lato] (ambidextrous & hump-winged crickets)
   |  |                 |-- †Hagloedischia [Hagloedischiidae]
   |  |                 |-- †Tuphellidae
   |  |                 |-- Prophalangopsidae Kirby, 1906
   |  |                 `-- Haglidae Handlirsch, 1906
   |  `--+-- Schizodactylidae [Schizodactylidea] (splay-footed crickets)
   |     `--o Gryllidea Laicharting, 1781 (sirkkamaiset pitkäsarviset; true crickets and allies)
   |        |-- Gryllotalpidae Saussure, 1870 [Gryllotalpoidea; Curtillidae] (mole crickets; maamyyräsirkat)
   |        `--o Grylloidea Laicharting, 1781 (sirkat)
   |           |?- †Acheta sedgwicki Brodie, 1845; L.Cret. WEu.
   |           |?- †Protogryllus minor (Bode, 1905); L.Cret. WEu.
   |           |-- †Protogryllidae Zeuner, 1937
   |           |-- †Baissogryllidae Gorochov, 1985
   |           |-- Mogoplistidae [incl. Malgasiidae Gorochov, 1984]
   |           |-- Myrmecophilidae Saussure, 1870 (ant crickets; muurahaissirkat)
   |           `--o Gryllidae after “WikiSpecies”
   |              |-- Gryllidae Laicharting, 1781 [incl. Neoaclidae Desutter-Grandcolas, 1988; Neoclidae; Paragryllidae; Podoscirtidae Saussure, 1893] (true crickets; sirkat)
   |              |-- Pentacentridae
   |              |-- Trigonidiidae Saussure, 1870 [=? Gryllidae: Luzarinae Hebard, 1928]
   |              |-- Phalangopsidae Saussure, 1878
   |              |-- Eneopteridae Saussure, 1874
   |              |-- Scleropteridae
   |              |-- Pteroplistidae
   |              |-- Cachoplistidae
   |              `-- Oecanthidae Saussure, 1877
   `--+--o †Permoraphidioidea Tillyard, 1932
      |  |--o †Permoraphidia [Permoraphidiidae Tillyard, 1932]
      |  |  |-- †P. americana Tillyard, 1932
      |  |  |-- †P. grandis Carpenter, 1943
      |  |  `-- †P. magnifica Béthoux & Nel, 2002
      |  |--o †Pseudelcanidae Gorochov, 1987
      |  |  `-- †Pseudelcana
      |  `--o †Thueringoedischiidae
      |     |-- †Hymenelcana
      |     |-- †Permoedischia
      |     `-- †Thueringoedischia
      |--o †Permelcanidae
      |  |?- †Proelcana
      |  |?- †Promartynovia
      |  |--o †Meselcaninae Gorochov, 1989
      |  |  `-- †Meselcana
      |  `--o †Permelcaninae
      |     `-- †Permelcana
      `--+--o †Elcanidea Handlirsch, 1906
         |  `--o †Elcanoidea Handlirsch, 1906
         |     `-- †Elcanidae Handlirsh, 1906
         `--o Caelifera Ander, 1936 (lyhytsarviset; short-horn grasshoppers and locusts)
            |--o †Locustopsoidea Handlirsch, 1906 [paraphyletic??]
            |  |?- †Locustrix Martins-Neto, 2003
            |  |-- †Locustavidae
            |  `-- †Locustopseidae
            |--o Tridactyloidea Brullé, 1835 [Tridactylidea Brullé, 1835]
            |  |-- Cylindrachelidae (sand gropers)
            |  `--o Tridactylidae Brullé, 1835 sensu Gorochov, Jarzembowski & Coram, 2006
            |     |-- †Mongoloxyinae Gorochov, 1992
            |     |-- Rhipipterygidae [Tridactylidae: Rhipipteryginae sensu Gorochov, Jarzembowski & Coram, 2006]
            |     `-- Tridactylidae Brullé, 1835 (pygmy mole crickets; kääpiömyyräsirkat)
            `--+--o Tetrigoidea (okasirkkamaiset)
               |  |-- Tetrigidae (okasirkat)
               |  `-- Batrachideidae
               `--+--o Proscopiidea
                  |  |-- Proscopiidae [Proscopioidea]
                  |  `--o Eumastacoidea
                  |     |-- Chorotypidae
                  |     |-- Mastacideidae
                  |     |-- Euschmidtiidae
                  |     |-- Thericleidae
                  |     |-- Miraculidae
                  |     |-- Episactidae
                  |     |-- Eumastacidae
                  |     |-- Gomphomastacidae
                  |     |-- Biroellidae
                  |     `-- Morabidae
                  `--+--o Trigonopterygoidea
                     |  |-- Borneacrididae
                     |  `-- Triconopterygidae
                     `--+--o Pneumoridea
                        |  |-- Pneumoridae [Pneumoroidea]
                        |  `--o Xyronodoidea [Tanaoceroidea]
                        |     |-- Xyronotidae
                        |     `-- Tanaoceridae
                        `--+--o Pamphagoidea
                           |  |-- Pamphagodidae
                           |  `-- Pamphagidae
                           `--o Acridoidea MacLeay, 1821 [incl. Pyrgomorphoidea]
                              |-- Tristiridae
                              |-- Lathiceridae
                              |-- Pyrgomorphidae (locusts; kulkusirkat)
                              |-- Lentulidae
                              |-- Ommexechidae
                              |-- Romaleidae
                              |-- Pauliniidae
                              `-- Acrididae MacLeay, 1819 (heinäsirkat)

Orthoptera incertae sedis:

Vitimiidae Sharov, 1968 [either Oedishioids or Hagloids (Gorochov, Jarzembowski & Coram, 2006)]
        †Vitimia Sharov, 1968; L.Cret. CAs.
        †Deinovitimia Gorochov, 1989; L.Cret. CAs. WEu.
            †D. insolita Gorochov, 1989
            †D. occidentalis Gorochov, Jarzembowski & Coram, 2006

Reference(s):