What is Semionotiformes?
[[File:Semionotus bergeri.jpg|thumb|Fossil of ''[[Semionotus]]'']] '''Semionotiformes''' is an extinct order of [[freshwater fish|freshwater]] and [[Saltwater fish|marine]] fish known from the [[Middle Triassic]] ([[Anisian]]) to the [[Upper Cretaceous|Late Cretaceous]] ([[Maastrichtian]]). Some examples of families are [[Semionotidae]] and [[Callipurbeckiidae.]] == Classification == * '''Order''' †'''Semionotiformes''' <small>Arambourg & Bertin 1958 sensu López-Arbarello 2012</small> ** Genus †''[[Orthurus]]'' <small>Kner 1866</small> ** Genus †''[[Sangiorgioichthys]]'' <small>Tintori & Lombardo 2007</small> ** Genus †''[[Luoxiongichthys]]'' <small>Wen et al. 2011</small> ** Genus †''[[Aphanepygus]]'' <small>Bassani 1879</small> ** Genus †''[[Placidichthys]]'' <small>Brito 2000</small> ** '''Family''' †'''[[Pleurolepididae]]''' <small>Lütken 1871</small> *** Genus †''[[Pleurolepis]]'' <small>Agassiz 1863 non Quenstedt 1852</small> ** '''Family''' †'''[[Macrosemiidae]]''' <small>Wagner 1860a corrig. Cope 1889 sensu Murray & Wilson 2009</small> [Macrosemii <small>Wagner 1860a</small>] *** Genus †''[[Eusemius]]'' <small>Vetter 1881</small> *** Genus †''[[Blenniomoeus]]'' <small>Costa 1850</small> [''Calignathus'' <small>Costa 1853</small>] *** Genus †''[[Enchelyolepis]]'' <small>Woodward 1918</small> *** Genus †''[[Palaeomacrosemius]]'' <small>Ebert, Lane & Kolbl-Ebert 2016</small> *** Genus †''[[Voelklichthys]]'' <small>Arratia & Schultze 2012</small> *** Genus †''[[Notagogus]]'' <small>Agassiz 1833-1844</small> [''Neonotagogus'' <small>Bravi 1994</small>] *** Genus †''[[Agoultichthys]]'' <small>Murray & Wilson 2009</small> *** Genus †''[[Histionotus]]'' <small>Egerton 1854</small> *** Genus †''[[Propterus]]'' <small>Agassiz 1833-1844</small> [''Rhynchoncodes'' <small>Costa 1850</small>] *** Genus †''[[Macrosemiocotzus]]'' <small>González-Rodríguez, Applegate & Espinosa-Arrubarrena 2004</small> *** Genus †''[[Legnonotus]]'' <small>Egerton 1853</small> *** Genus †''[[Macrosemius]]'' <small>Agassiz 1833-1844</smal