Aapticheilichthys Huber, 2011 (current name source)
Aaptochiton Hoare & Karasawa, 2008 † (current name source)
Aardonyx Yates, Bonnan, Neveling, Chinsamy & Blackbeard, 2010 † (current name source)
Aaveqaspis Peel & Stein, 2009 † (current name source)
Abacophrastus Will, 2011 (current name source)
Abaetetuba Tourinho-Davis, 2004 (current name source)
Abagnostus Yang & Liu in Yang et al., 1991 † (current name source)
Abaxinicephora Gorochov & Kang, 2005 (current name source)
Abbrevikhosara Aristov, 2013 † (current name source)
Abcandonopsis Karanovic, 2004 accepted as Candonopsis Vávra, 1891 (source of synonymy)
Abcharis Tkoč & Ježek, 2013 (current name source)
Abdosetae Fu, Zhang & MacDermott, 2010 (current name source)
Abeoforma Marshall & Berbee, 2011 (current name source)
Aberracla Gorokhov, 2011 accepted as Leptopsis Desutter-Grandcolas, 1996 (source of synonymy)
Aberratiodontus Gong, Hou & Wang, 2004 † (current name source)
Abes Fibiger, 2010 (current name source)
Aborjinia Özdikmen, 2010 (current name source)
Abraracourcix Stroiński & Szwedo, 2011 † (current name source)
Abrekites Shigeta & Zakharov, 2009 † (current name source)
Abrekopsis Kaim, 2009 † (current name source)
Abrigramma Yang, Wang, Labandeira, Shih & Ren, 2014 † (current name source)
Abrohadeocoleodes Tan, Ren, Shih & Yang, 2013 † (current name source)
Abropelecinus Feng, Shih, Ren & Liu, 2010 † (current name source)
Abscondita Ballantyne, Lambkin & Fu, 2013 (current name source)
Absensomina Cartwright, 2010 (current name source)
Absurdaster Kroh, Lukeneder & Gallemí, 2014 † (current name source)
Abulbaspis Zhou & Zhou, 2006 † (current name source)
Abursanema Yaghoubi, Pourjam, Pedram, Siddiqi & Atighi, 2014 (current name source)
Abydosaurus Chure, Britt, Whitlock & Wilson, 2010 † (current name source)
Abyssomelania Kaim, Jenkins, Tanabe & Kiel, 2014 † (current name source)
Abyssopinna Schultz & Huber, 2013 accepted as Pinna Linnaeus, 1758 (source of synonymy)
Acadiestheriella Kozur & Weems, 2010 † (current name source)
Acallocheirus Bird & Bamber, 2013 (current name source)
Acamerobia Fan & Walter, 2011 (current name source)
Acamptonectes Fischer, Maisch, Naish, Kosma, Liston, Joger, Krüger, Pérez, Tainsh & Appleby, 2012 † (current name source)
Acangaobitermes Rocha, Cancello & Cuezzo, 2011 (current name source)
Acanoides Sun, Marusik & Tu, 2014 (current name source)
Acanthaktema Pace, 2008 accepted as Hydrosmecta Thomson, 1858 (source of synonymy)
Acanthatreta Streng, 1999 † (current name source)
Acanthobatesianus Wallin, Kvamme & Lin, 2012 accepted as Acanthocinus Dejean, 1821 (source of synonymy)
Acanthocasuarina Taylor in Taylor, Jennings, Purcell & Austin, 2011 (current name source)
Acanthocephalonotum Petrulevičius & Popov, 2014 † (current name source)
Acanthocollum Opitz, 2010 (current name source)
Acantholachesilla García Aldrete, Saenz Manchola & González Obando, 2014 (current name source)
Acanthomichelinoceras Kröger, Klug & Mapes, 2005 † (current name source)
Acanthoneelidus Bretfeld & Griegel, 2006 (current name source)
Acanthoperla Cavalier-Smith in Cavalier-Smith & Chao, 2012 (current name source)
Acanthophaedusa Nordsieck, 2007 (current name source)
Acanthophoenicides Audo & Charbonnier, 2012 † (current name source)
Acanthoraculus Braun & Morris, 2009 (current name source)
Acanthorhachis Martill, Del Strother & Gallien, 2014 † (current name source)
Acanthorota Kozur & Mostler, 2008 † (current name source)
Acanthoschizorota Kozur & Mostler, 2008 † (current name source)
Acanthoscirtes Hemp, 2012 (current name source)
Acanthospondylus Harper, 2014 † (current name source)
Acanthostictoporella Ernst, 2011 † (current name source)
Acanthotheca Vendrasco, Kouchinsky, Porter & Fernandez, 2011 † (current name source)
Acanthotiphia Boni Bartalucci, 2011 accepted as Pseudotiphia Ashmead, 1903 (source of synonymy)
Acanthotretella Holmer & Caron, 2006 † (current name source)
Acareprosopon Klompmaker, 2013 † (current name source)
Acaricesa Koçak & Kemal, 2008 (current name source)
Acaricis Beard & Gerson, 2009 (current name source)
Acarnana Emeljanov, 2012 accepted as Acarna Stål, 1863 (source of synonymy)
Acauda Whipps, 2011 (current name source)
Acavomonas Tikhonenkov, Janouškovec, Mylnikov, Mikhailov, Simdyanov, Aleoshin & Keeling, 2014 (current name source)
Acephalus Mandal & Ray, 2013 (current name source)
Acerhacus Hoffmann, 2006 (current name source)
Acerobiella Gattolliat, 2012 (current name source)
Acerplica Waterhouse, 2008 † (current name source)
Achaemenothrombium Saboori, Wohltmann & Hakimitabar, 2010 (current name source)
Achaeridion Wunderlich, 2008 † (current name source)
Achaiabracon Belokobylskij, 2009 (current name source)
Achaiusoides Tereshkin, 2011 (current name source)
Achelatrius Kirejtshuk & Azar in Kirejtshuk, Azar, Tafforeau, Boistel & Fernandez, 2009 † (current name source)
Achelipoda Yang, Zhang & Zhang, 2007 (current name source)
Acheroniotes Lohaj & Lakota, 2010 (current name source)
Acherontisuchus Hastings, Bloch & Jaramillo, 2011 † (current name source)
Acheroraptor Evans, Larson & Currie, 2013 † (current name source)
Achillesaurus Martinelli & Vera, 2007 † (current name source)
Achorius Kuschel, 2008 (current name source)
Aciculoplites Foissner & Gabilondo in Gabilondo & Foissner, 2009 (current name source)
Aciculopoda Feldmann & Schweitzer, 2010 † (current name source)
Acinacodus Lopatin, Mashchenko & Averianov, 2010 † (current name source)
Acinodidemnum Varol, 2006 † (current name source)
Acinoproskelos Bamber & Błażewicz-Paszkowycz, 2013 (current name source)
Acleistochelys Gaffney, Roberts, Sissoko, Bouare, Tapanila & O'Leary, 2007 † (current name source)
Aclogryllus Gorokhov, 2009 accepted as Paragryllus Guérin-Méneville, 1844 (source of synonymy)
Acnephalomyia Londt, 2010 (current name source)
Acoitella Salas, 2011 † (current name source)
Acolaspoides Moseyko, Kirejtshuk & Nel, 2010 † (current name source)
Acompsophloeus Thomas, 2010 (current name source)
Acorigone Wunderlich, 2008 (current name source)
Acosma Yakovlev, 2011 (current name source)
Acosta Özdikmen, 2012 (current name source)
Acostinella Sarkar & Gupta, 2008 † (current name source)
Acrecebus Kay & Cozzuol, 2006 † (current name source)
Acristatherium Hu, Meng, Li & Wang, 2010 † (current name source)
Acristavus Gates, Horner, Hanna & Nelson, 2011 † (current name source)
Acritophiomys Sallam, Seiffert & Simons, 2012 † (current name source)
Acrocephalomyia Ibáñez-Bernal & Hernández-Ortiz, 2012 (current name source)