Biology:List of Mesozoic birds

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This list of Mesozoic birds is a comprehensive list of all Mesozoic dinosaurs that have been assigned to the clade Avialae (birds, in the broadest sense). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that are no longer considered avialan. The list currently includes 263 genera.

Scope and terminology

There is no official, canonical list of Mesozoic bird genera, but some of the more complete ones include Holtz's list of Mesozoic dinosaurs,[1] Molina-Perez & Larramendi's list of theropods,[2] and Mickey Mortimer's Theropod Database.[3] Lists of ex-birds are generally rare, but one example is the "Ex-Saurischian Taxa and Basal Saurischians" section of the Theropod Database.[4]

Authors and year

The authors column lists the authors of the formal description responsible for the erection of the genus listed. They are not necessarily the same as the authors of the type species, as sometimes a species from one genus is determined sufficiently distinct to warrant the erection of a new genus to house it. If this is the case, only the latter authors will be listed. The year column notes the year the genus' description was published.

Status

Naming conventions and terminology follow the International Code of Zoological Nomenclature (ICZN). Technical terms used include:

  • Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen.
  • Nomen nudum (Latin for "naked name"): A name that has appeared in print but has not yet been formally published by the standards of the ICZN. Nomina nuda (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum and will be italicized on this list. Often, the formally published name will differ from any nomina nuda that describe the same specimen.
  • Preoccupied name: A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced.
  • Nomen dubium (Latin for "dubious name"): A name describing a fossil with no unique diagnostic features. As this can be an extremely subjective and controversial designation, this term is not used on this list.

Age

The age column denotes the epoch of geologic time to which the fossils date. Genera that are invalid, misidentified, or otherwise do not represent a valid Mesozoic bird are listed as age N/A because there was never a time in which a Mesozoic bird by that generic name actually lived.

Location and notes

The location column designates the geographic region where remains of the relevant genus have been found. The regions used are countries, despite the fact that there were no political boundaries in Mesozoic times; they are only used for convenience. Genera that are invalid, misidentified, or otherwise do not represent a valid Mesozoic bird are listed as location N/A because there was never a place in which a Mesozoic bird by that generic name actually lived. The notes column is a collection of annotations on the scientific significance and taxonomic history of listed genera, as well as elaborations on the information presented in other columns.

List

Genus Authors Year Status Age Location Notes Images
Abavornis[5] Panteleyev 1998 Valid 3 Late Cretaceous


Uzbekistan
Aberratiodontus[6] Gong et al. 2004 Junior synonym 2 Early Cretaceous


China Junior synonym of Yanornis.
Abitusavis[7] Wang et al. 2020 Valid 2 Early Cretaceous


China
Alamitornis[8] Agonlin & Martinelli 2009 Valid 3 Late Cretaceous


Argentina
Alcmonavis[9] Rauhut et al. 2019 Valid 1 Late Jurassic


Germany
Alcmonavis holotype.png
Alethoalaornis Li et al. 2007 Valid 2 Early Cretaceous


China
Alexornis[10] Brodkorb 1976 Valid 3 Late Cretaceous


Mexico
Ambiortus Kurochkin 1982 Valid 2 Early Cretaceous


Mongolia
Ambopteryx[11] Wang et al. 2019 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Ambopteryx restoration.png
Anatalavis Olson & Parris 1987 Valid 3 Late Cretaceous


United States
England
The type species is known from the Late Cretaceous–Paleocene border, while a referred species is from the Eocene.
Anchiornis[12] Xu et al. 2009 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Anchiornis-Beijing Museum of Natural History.jpg
Angelinornis Kashin 1972 Junior synonym 3 Late Cretaceous


United States Junior synonym of Ichthyornis.
Antarcticavis[13] Cordes-Person et al. 2020 Valid 3 Late Cretaceous


Antarctica
Apatornis Marsh 1873 Valid 3 Late Cretaceous


United States
Apatornis.jpg
Apsaravis[14] Norell & Clarke 2001 Valid 3 Late Cretaceous


Mongolia
Archaeopteryx[15] Meyer 1861 Valid 1 Late Jurassic


Germany Considered a non-avialan theropod by some researchers.
Archaeopteryx lithographica (Berlin specimen).jpg
Archaeorhynchus[16] Zhou & Zhang 2006 Valid 2 Early Cretaceous


China
Archaeorhynchus-Paleozoological Museum of China.jpg
Archaeornis Petronievics 1917 Junior synonym 1 Late Jurassic


Germany Junior synonym of Archaeopteryx.
Archaeornithura[17] Wang et al. 2015 Valid 2 Early Cretaceous


China
Archaeornithura meemannae Holotype.jpg
Archaeovolans Czerkas & Xu 2002 Junior synonym 2 Early Cretaceous


China Junior synonym of Yanornis.
Asiahesperornis Nesov & Prizemlin 1991 Valid 3 Late Cretaceous


Kazakhstan
Asteriornis[18] Field et al. 2020 Valid 3 Late Cretaceous


Belgium
Asteriornis.svg
Aurornis[19] Godefroit et al. 2013 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Aurornis.jpg
Austinornis[20] Clarke 2004 Valid 3 Late Cretaceous


United States
Avimaia[21] Bailleul et al. 2019 Valid 2 Early Cretaceous


China
Fossil-AvimaiaSchweitzeraeWithUnlaidEgg.jpg
Avisaurus[22] Brett-Surman & Paul 1985 Valid 3 Late Cretaceous


United States
Avisaurus and Brachychampsa by tomozsaurus.jpg
Balaur[23] Csiki et al. 2010 Valid 3 Late Cretaceous


Romania Originally (and sometimes still) thought to be a non-avialan theropod.
Balaur bondoc 1.jpg
Baptornis Marsh 1877 Valid 3 Late Cretaceous


United States
Marsh1880-193.jpg
Bauxitornis[24] Dyke & Ősi 2010 Valid 3 Late Cretaceous


Hungary
Bauxitornis.jpg
Beiguornis[25] Wang et al. 2022 Valid 2 Early Cretaceous


China
Bellulia Wang et al. 2016a Preoccupied N/A N/A Name preoccupied by the moth Bellulia Fibiger 2008 and replaced by Bellulornis.
Bellulornis Wang et al. 2016b Valid 2 Early Cretaceous


China
Bohaiornis[26] Hu et al. 2011 Valid 2 Early Cretaceous


China
Bohaiornis skull reconstruction.png
Boluochia[27] Zhou 1995 Valid 2 Early Cretaceous


China
Bradycneme[28] Harrison & Walker 1975 Misidentification N/A N/A Originally described as a bird; more likely a non-avialan theropod.
Brevidentavis[29] O'Connor et al. 2021 Valid 2 Early Cretaceous


China
Brevirostruavis[30] Li et al. 2021 Valid 2 Early Cretaceous


China
Brodavis[31] Martin et al. 2012 Valid 3 Late Cretaceous


United States
Mongolia
Caihong[32] Hu et al. 2018 Valid 1 Late Jurassic


China Considered to be a non-avialan theropod by some researchers.
Caihong skeleton.jpg
Camptodontornis[33] Demirjian 2019 Valid 2 Early Cretaceous


China
Camptodontus[34] Li et al. 2010 Preoccupied N/A N/A Name preoccupied by the beetle Camptodontus Dejean, 1826 and replaced by Camptodontornis.
Canadaga[35] Hou 1999 Valid 3 Late Cretaceous


Canada
Castignovolucris[36] Buffetaut et al. 2023 Valid 3 Late Cretaceous


France
Catenoleimus[5] Panteleyev 1998 Valid 3 Late Cretaceous


Uzbekistan
Cathayornis Zhou et al. 1992 Valid 2 Early Cretaceous


China
Cathayornis-Beijing Museum of Natural History.jpg
Ceramornis[37] Brodkorb 1963 Valid 3 Late Cretaceous


United States
Cerebavis[38] Kurochkin et al. 2006 Valid 3 Late Cretaceous


Russia
Changchengornis[39] Ji et al. 1999 Valid 2 Early Cretaceous


China
Changchengornis-Geological Museum of China.jpg
Changmaornis[40] Wang et al. 2013 Valid 2 Early Cretaceous


China
Changmaornis.png
Changzuiornis[41] Huang et al. 2016 Disputed 2 Early Cretaceous


China Possibly synonymous with Juehuaornis.
Chaoyangia Hou & Zhang 1993 Valid 2 Early Cretaceous


China
Chiappeavis[42] O'Connor et al. 2016 Valid 2 Early Cretaceous


China
Chongmingia[43] Wang et al. 2016 Valid 2 Early Cretaceous


China
Chupkaornis[44] Tanaka et al. 2017 Valid 3 Late Cretaceous


Japan
Cimoliornis Owen 1846 Misidentification N/A N/A Originally described as a bird; actually a pterosaur.
Cimolopteryx Marsh 1892 Valid 3 Late Cretaceous


United States May be Paleocene.
Cimolopteryx.jpg
Colonosaurus[45] Marsh 1872 Junior synonym 3 Late Cretaceous


United States Junior synonym of Ichthyornis.
Concornis[46] Sanz & Buscalioni 1992 Valid 2 Early Cretaceous


Spain
Concornis lacustris 34.jpg
Confuciusornis[47] Hou et al. 1995 Valid 2 Early Cretaceous


China
Confuciusornis male.jpg
Coniornis Marsh 1893 Junior synonym 3 Late Cretaceous


United States Junior synonym of Hesperornis.
Cosesaurus[48] Ellenberger & de Villalta 1974 Misidentification N/A N/A Sometimes proposed to be a bird ancestor; actually a tanystropheid.
Cratoavis[49] Carvalho et al. 2015 Valid 2 Early Cretaceous


Brazil
Cratonavis[50] Li et al. 2023 Valid 2 Early Cretaceous


China
Cretaaviculus Bazhanov 1969 Valid 3 Late Cretaceous


Kazakhstan
Cretornis[51] Fritsch 1880 Misidentification N/A N/A Originally described as a bird; actually a pterosaur.
Cruralispennia[52] Wang et al. 2017 Valid 2 Early Cretaceous


China
Ncomms14141-f1.jpg
Cuspirostrisornis[53] Hou 1997 Valid 2 Early Cretaceous


China
Dalianraptor Gao & Liu 2005 Disputed N/A N/A Likely a chimaera consisting of a Jeholornis and another theropod.
Dalingheornis[54] Zhang et al. 2006 Valid 2 Early Cretaceous


China
Dapingfangornis[55] Li et al. 2006 Valid 2 Early Cretaceous


China
Didactylornis[56] Yuan 2008 Junior synonym 2 Early Cretaceous


China Junior synonym of Sapeornis.
Dingavis[57] O'Connor et al. 2016 Disputed 2 Early Cretaceous


China Possibly synonymous with Changzuiornis and/or Juehuaornis.
Dunhuangia[58] Wang et al. 2015 Valid 2 Early Cretaceous


China
Elbretornis[59] Walker & Dyke 2009 Valid 3 Late Cretaceous


Argentina Possibly synonymous with Lectavis, Soroavisaurus and/or Yungavolucris.
Elektorornis[60] Xing et al. 2019 Valid 2 Early Cretaceous


Myanmar
Elopteryx[61] Andrews 1913 Misidentification N/A N/A Originally described as a bird; more likely to be a non-avialan theropod.
Elopteryx nopcsai bones.jpg
Elsornis[62] Chiappe et al. 2007 Valid 3 Late Cretaceous


Mongolia
Enaliornis Seeley 1876 Valid 3 Late Cretaceous


England
Enantiophoenix[63] Cau & Arduini 2008 Valid 3 Late Cretaceous


Lebanon
Enantiornis[64] Walker 1981 Valid 3 Late Cretaceous


Argentina
Enantiornis.jpg
Eoalulavis[65] Sanz et al. 1996 Valid 2 Early Cretaceous


Spain
Eocathayornis[66] Zhou 2002 Valid 2 Early Cretaceous


China
Eoconfuciusornis[67] Zhang et al. 2008 Valid 2 Early Cretaceous


China
Eoconfuciusornis zhengi.jpg
Eoenantiornis[68] Hou et al. 1999 Valid 2 Early Cretaceous


China
Eoenantiornis-Paleozoological Museum of China.jpg
Eogranivora[69] Zheng et al. 2018 Valid 2 Early Cretaceous


China
Eogranivora edentulata.jpg
Eopengornis Wang et al. 2014 Valid 2 Early Cretaceous


China
Eosinopteryx[70] Godefroit et al. 2013 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Eosinopteryx.jpg
Epidendrosaurus[71] Zhang et al. 2002 Junior synonym 1 Late Jurassic


China Possible synonym of Scansoriopteryx.
Epidexipteryx[72] Zhang et al. 2008 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Epidexipteryx hui slab.jpg
Eurolimnornis[73] Kessler & Jurcsák 1986 Misidentification N/A N/A Originally described as a bird; reinterpreted as a pterodactyloid pterosaur.
Evgenavis[74] O'Connor et al. 2014 Valid 1 Early Cretaceous


Russia
Explorornis[5] Panteleyev 1998 Valid 3 Late Cretaceous


Uzbekistan
Falcatakely[75] O'Connor et al. 2020 Valid 3 Late Cretaceous


Madagascar
Feitianius[76] O'Connor et al. 2015 Valid 2 Early Cretaceous


China
Flexomornis[77] Tykoski & Fiorillo 2010 Valid 3 Late Cretaceous


United States
Fortipesavis[78] Clark & O'Connor 2021 Valid 2 Early Cretaceous


Myanmar
Fortunguavis[79] Wang et al. 2014 Valid 2 Early Cretaceous


China
Fujianvenator[80] Xu et al. 2023 Valid 1 Late Jurassic


China Found within the family Anchiornithidae, which may represent non-avialan dinosaurs
Fukuipteryx[81] Imai et al. 2019 Valid 2 Early Cretaceous


Japan
Reconstructions and restoration. a–c Skeletal reconstructions of FPDM-V-9769 in cranial (a), dorsal (b), and left-lateral (c) views. d Life restoration of Fukuipteryx prima.webp
Fumicollis[82] Bell & Chiappe 2015 Valid 3 Late Cretaceous


United States
Gallornis Lambrecht 1931 Valid 2 Early Cretaceous


France
Gansus[83] Hou & Liu 1984 Valid 2 Early Cretaceous


China
Gansus-Beijing Museum of Natural History.jpg
Gargantuavis[84] Buffetaut & Le Loeuff 1998 Valid 3 Late Cretaceous


France
Spain
Romania
Gargantuavis holotype pelvis.jpg
Gettyia[85] Atterholt et al. 2018 Valid 3 Late Cretaceous


United States
Gobipipus[86] Kurochkin & Chatterjee 2013 Valid 3 Early Cretaceous


Mongolia Very similar to embryonic Gobipteryx.
Gobipteryx[87] Elżanowski 1994 Valid 3 Late Cretaceous


Mongolia
Grabauornis[88] Dalsätt et al. 2014 Valid 2 Early Cretaceous


China
Gracilornis[89] Li & Hou 2011 Valid 2 Early Cretaceous


China
Graculavus Marsh 1872 Valid 3 Late Cretaceous


United States May be Paleocene.
Gretcheniao Chiappe et al. 2019 Valid 2 Early Cretaceous


China
Griphornis Woodward 1862 Junior synonym 1 Late Jurassic


Germany Name officially rejected in favor of Archaeopteryx.
Griphosaurus Wagner 1862 Junior synonym 1 Late Jurassic


Germany Name officially rejected in favor of Archaeopteryx.
Guildavis[20] Clarke 2004 Valid 3 Late Cretaceous


United States
Gurilynia[90] Kurochkin 1999 Valid 3 Late Cretaceous


Mongolia
Halimornis[91] Chiappe 2002 Valid 3 Late Cretaceous


United States
Hargeria Lucas 1903 Junior synonym 3 Late Cretaceous


United States Junior synonym of Hesperornis.
"Hebeiornis"[92] Xu et al. 1999 Nomen nudum N/A N/A Synonym of Vescornis due to being based on the same holotype. However, despite predating the description of Vescornis by five years, its description is so poor that it is regarded as a nomen nudum and a synonym.
Heptasteornis[28] Harrison & Walker 1975 Misidentification N/A N/A Originally described as a bird; more likely a non-avialan theropod.
Hesperornis Marsh 1872 Valid 3 Late Cretaceous


United States
Canada
Russia
Hesperornis regalis (1).jpg
Holbotia[93] Zelenkov & Averianov 2015 Valid 2 Early Cretaceous


Mongolia
Hollanda[94] Bell et al. 2010 Valid 3 Late Cretaceous


Mongolia
Hollanda luceria 2021.jpg
Hongshanornis[95] Zhou & Zhang 2005 Valid 2 Early Cretaceous


China
Fossil specimen (DNHM D2945 6) of Hongshanornis longicresta.jpg
Horezmavis Nessov & Borkin 1983 Valid 3 Late Cretaceous


Uzbekistan
Houornis[96] Wang & Liu 2015 Valid 2 Early Cretaceous


China
Huoshanornis[97] Wang et al. 2010 Valid 2 Early Cretaceous


China
Iaceornis[20] Clarke 2004 Valid 3 Late Cretaceous


United States
Iberomesornis[98] Sanz & Bonaparte 1992 Valid 2 Early Cretaceous


Spain
Iberomesornis.jpg
Ichthyornis Marsh 1873 Valid 3 Late Cretaceous


United States
Ichthyornis Clean.png
Ilerdopteryx Lacasa-Ruiz 1985 Valid 2 Early Cretaceous


Spain
Incolornis[5] Panteleyev 1998 Valid 3 Late Cretaceous


Uzbekistan
Intiornis[99] Novas et al. 2010 Valid 3 Late Cretaceous


Argentina
Intiornis holotype left foot.png
Iteravis Zhou et al. 2014 Valid 2 Early Cretaceous


China
Janavis[100] Benito et al. 2022 Valid 3 Late Cretaceous


Belgium
Jeholornis[101] Zhou et al. 2002 Valid 2 Early Cretaceous


China
Jeholornis-Paleozoological Museum of China.jpg
Jianchangornis[102] Zhou et al. 2009 Valid 2 Early Cretaceous


China
Jibeinia[53] Hou 1997 Valid 2 Early Cretaceous


China
Jinfengopteryx[103] Ji et al. 2005 Misidentification N/A N/A Originally described as a bird; actually a non-avian dinosaur.
Jinguofortis[104] Wang et al. 2018 Valid 2 Early Cretaceous


China
Type specimen of Jinguofortis perplexu.jpg
Jinzhouornis Hou et al. 2002 Junior synonym 2 Early Cretaceous


China Junior synonym of Confuciusornis.
Jiuquanornis[40] Wang et al. 2013 Valid 2 Early Cretaceous


China
Jiuquanornis.png
Jixiangornis[105] Ji et al. 2002 Valid 2 Early Cretaceous


China
Jixiangornis orientalis.JPG
Judinornis Nessov & Borkin 1983 Valid 3 Late Cretaceous


Mongolia
Juehuaornis[106] Wang et al. 2015 Valid 2 Early Cretaceous


China
Junornis[107] Liu et al. 2017 Valid 2 Early Cretaceous


China
Junornis.PNG
Jurapteryx Howgate 1984 Junior synonym 1 Late Jurassic


Germany Junior synonym of Archaeopteryx.
Kaririavis[108] Carvalho et al. 2021 Valid 2 Early Cretaceous


Brazil
Khinganornis[109] Wang et al. 2020 Valid 2 Early Cretaceous


China
Kizylkumavis[110] Nessov 1984 Valid 3 Late Cretaceous


Uzbekistan
Kompsornis[111] Wang et al. 2020 Valid 2 Early Cretaceous


China
Kookne Novas et al. 2019 Valid 3 Late Cretaceous


Argentina
Kuszholia[112] Nesov 1992 Valid 3 Late Cretaceous


Uzbekistan
Lamarqueavis[113] Agnolin 2010 Valid 3 Late Cretaceous


Argentina
United States
Canada
Laopteryx[114] Marsh 1881 Misidentification N/A N/A Originally described as a bird; actually a pterosaur.
Laornis[115] Marsh 1870 Valid 3 Late Cretaceous


United States May be Paleocene.
Largirostrornis[53] Hou 1997 Disputed 2 Early Cretaceous


China Possible synonym of Cathayornis.
Lectavis[116] Chiappe 1993 Valid 3 Late Cretaceous


Argentina
Lenesornis[117] Kurochkin 1996 Valid 3 Late Cretaceous


Uzbekistan
Lestornis[118] Marsh 1876 Junior synonym 3 Late Cretaceous


United States Junior synonym of Hesperornis.
Liaoningornis[119] Hou 1996 Valid 2 Early Cretaceous


China
Liaoxiornis[120] Hou & Chen 1999 Valid 2 Early Cretaceous


China
Liaoxiornis delicatus.jpg
Limenavis[121] Clarke & Chiappe 2001 Valid 3 Late Cretaceous


Argentina
Limnornis[122] Kessler & Jurcsak 1984 Misidentification N/A N/A Name preoccupied by the ovenbird Limnornis Gould 1839 and replaced by Palaeocursornis. Originally described as a bird; actually a pterosaur.
Lingyuanornis[123] Ji & Ji 1999 Junior synonym N/A N/A Junior synonym of Liaoxiornis as it is based on the same holotype.
Linyiornis[124] Wang et al. 2016 Valid 2 Early Cretaceous


China
Lisboasaurus[125] Seiffert 1970 Misidentification N/A N/A Sometimes proposed to be a bird; actually a crocodilian.
Lonchodytes[37] Brodkorb 1963 Valid 3 Late Cretaceous


United States May be Paleocene.
Longchengornis[53] Hou 1997 Disputed 2 Early Cretaceous


China Possible synonym of Cathayornis.
Longicrusavis[126] O'Connor et al. 2010 Valid 2 Early Cretaceous


China
Longipteryx[127] Zhang et al. 2001 Valid 2 Early Cretaceous


China
Longipteryx-Beijing Museum of Natural History.jpg
Hou et al. 2004 Valid 2 Early Cretaceous


China
Longirostravis-Tianjin Natural History Museum.jpg
Longisquama[128] Sharov 1970 Misidentification N/A N/A Sometimes proposed to be a bird ancestor; actually an indeterminate reptile.
Longusunguis[129] Wang et al. 2014 Valid 2 Early Cretaceous


China
Longusunguis skull.png
Maaqwi[130] McLachlan et al. 2017 Valid 3 Late Cretaceous


Canada
Martinavis[131] Walker et al. 2007 Valid 3 Late Cretaceous


France
Argentina
Meemannavis[29] O'Connor et al. 2021 Valid 2 Early Cretaceous


China
Megalancosaurus[132] Calzavara et al. 1980 Misidentification N/A N/A Sometimes proposed to be a bird ancestor, but actually a drepanosaurid.
Mengciusornis[133] Wang et al. 2019 Valid 2 Early Cretaceous


China
Microenantiornis Wei & Li 2017 Valid 2 Early Cretaceous


China
Mirarce[85] Atterholt et al. 2018 Valid 3 Late Cretaceous


United States
Mirarce eatoni.jpg
Mirusavis[134] Wang et al. 2020 Valid 2 Early Cretaceous


China
Monoenantiornis[135] Hu & O'Connor 2016 Valid 2 Early Cretaceous


China
Musivavis[136] Wang et al. 2022 Valid 2 Early Cretaceous


China
Mystiornis[137] Kurochkin et al. 2011 Valid 2 Early Cretaceous


Russia
Nanantius[138] Molnar 1986 Valid 2 Early Cretaceous


Australia
Neimengornis[139] Wang et al. 2021 Valid 2 Early Cretaceous


China
Neogaeornis[140] Lambrecht 1929 Valid 3 Late Cretaceous


Chile
Neuquenornis[141] Chiappe & Calvo 1994 Valid 3 Late Cretaceous


Argentina
Noguerornis[142] Lacasa-Ruiz 1989 Valid 2 Early Cretaceous


Spain
Novacaesareala Parris & Hope 2002 Valid 3 Late Cretaceous


United States May be Paleocene.
Xing et al. 2020 Misidentification N/A N/A Originally described as a bird; reinterpreted as an indeterminate lizard.
Omnivoropteryx[143] Czerkas & Ji 2002 Valid 2 Early Cretaceous


China
Orienantius Liu et al. 2019 Valid 2 Early Cretaceous


China
Ostromia[144] Foth & Rauhut 2017 Valid 1 Late Jurassic


Germany Considered a non-avialan theropod by some researchers.
Ostromia crassipes Teylers 1.jpg
Otogornis Hou 1994 Valid 2 Early Cretaceous


China
Palaeocursornis[73] Kessler & Jurcsak 1986 Misidentification N/A N/A Originally described as a bird; actually a pterosaur.
Palaeonornis Emmons 1857 Misidentification N/A N/A Originally described as a bird; actually a junior synonym of the phytosaur Rutiodon.[4]
Palaeopteryx Jensen 1981 Misidentification N/A N/A Originally described as a bird; more likely a non-avian theropod.
Palaeornis Mantell 1844 Misidentification N/A N/A Name preoccupied by the parrot Palaeornis Vigors 1825. Originally described as a bird; actually a pterosaur.
Palaeotringa Marsh 1870 Valid 3 Late Cretaceous


United States May be Paleocene.
Palintropus[145] Brodkorb 1970 Valid 3 Late Cretaceous


United States
Canada
Parabohaiornis[129] Wang et al. 2014 Valid 2 Early Cretaceous


China
Parahesperornis[146] Martin 1984 Valid 3 Late Cretaceous


United States
Skeleton of Parahesperornis alexi.jpg
Parahongshanornis[147] Li et al. 2011 Valid 2 Early Cretaceous


China
Parapengornis[148] Hu et al. 2015 Valid 2 Early Cretaceous


China
Parapengornis eurycaudatus holotype.PNG
Paraprotopteryx[149] Zheng et al. 2007 Valid 2 Early Cretaceous


China
Parascaniornis Lambrecht 1933 Junior synonym 3 Late Cretaceous


Sweden Junior synonym of Baptornis.
Parvavis[150] Wang et al. 2014 Valid 3 Late Cretaceous


China
Parvavis.jpg
Pasquiaornis[151] Tokaryk et al. 1997 Valid 3 Late Cretaceous


Canada
Patagopteryx[152] Alvarenga & Bonaparte 1992 Valid 3 Late Cretaceous


Argentina
Patagopteryx skeleton.jpg
Pedopenna[153] Xu & Zhang 2005 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Pelagornis Seeley 1866 Preoccupied N/A N/A Named preoccupied by the Miocene bird Pelagornis Lartet 1857 and replaced by Enaliornis.
Pengornis[154] Zhou et al. 2008 Valid 2 Early Cretaceous


China
Piksi[155] Varricchio 2002 Misidentification N/A N/A Originally described as a bird; reinterpreted as a pterodactyloid pterosaur.
Piscivoravis[156] Zhou et al. 2013 Valid 2 Early Cretaceous


China
Piscivoravis sketch.jpg
Piscivorenantiornis[157] Wang & Zhou 2017 Valid 2 Early Cretaceous


China
Platanavis[112] Nesov 1992 Valid 3 Late Cretaceous


Uzbekistan
Plegadornis Wetmore 1962 Preoccupied N/A N/A Name preoccupied by the modern bird Plegadornis Brehm 1855; junior synonym of Ichthyornis.
Polarornis[158] Chatterjee 2002 Valid 3 Late Cretaceous


Antarctica
Potamornis[159] Elzanowski et al. 2001 Valid 3 Late Cretaceous


United States
Praeornis[160] Rautian 1978 Valid 1 Late Jurassic


Kazakhstan
Priscavolucris[161] Gomez Pallerola 1979 Misidentification N/A N/A Originally described as a bird; reinterpreted as a hybodontiform fish.[162]
"Proornis" Lim 1993 Nomen nudum N/A N/A
"Proornis coreae" fossils on display.jpg
Protarchaeopteryx[163] Ji & Ji 1997 Misidentification N/A N/A Originally described as a bird; actually a non-avian dinosaur.
Protoavis[164] Chatterjee 1991 Misidentification N/A N/A Originally described as a bird; more likely a chimaera of several vertebrates.
Protopteryx[165] Zhang & Zhou 2000 Valid 2 Early Cretaceous


China
Protopteryx fengningensis (BMNHC Ph1060A) NMNS.jpg
Rafinesque 1815 Misidentification N/A N/A Sometimes thought to be a bird before being described as a pterosaur.
Pterygornis[166] Wang et al. 2015 Valid 2 Early Cretaceous


China
Qiliania[167] Ji et al. 2011 Valid 2 Early Cretaceous


China
Rahona[168] Forster et al. 1998a Preoccupied N/A N/A Name preoccupied by the moth Rahona Griveaud 1975 and replaced by Rahonavis.
Rahonavis[169] Forster et al. 1998b Valid 3 Late Cretaceous


Madagascar Considered a non-avialan theropod by some researchers.
Maniraptoran ROM.jpg
Rapaxavis[170] Morschhauser et al. 2009 Valid 2 Early Cretaceous


China
Rapaxavis.jpg
Rhamphorhynchus[171] Meyer 1846 Misidentification N/A N/A Originally thought to be a bird before being described as a pterosaur.
Samrukia[172] Naish et al. 2012 Misidentification N/A N/A Originally described as a bird; actually a pterosaur.
Sapeornis[173] Zhou & Zhang 2002 Valid 2 Early Cretaceous


China
Sapeornis chaoyangensis NMNS.jpg
Sazavis[174] Nesov 1989 Valid 3 Late Cretaceous


Uzbekistan
Scansoriopteryx[175] Czerkas & Yuan 2002 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Scansoriopteryx heilmanni.jpg
Schizooura[176] Zhou et al. 2012 Valid 2 Early Cretaceous


China
Serikornis[177] Lefèvre et al. 2017 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Serikornis snout tip.jpg
Shangyang Wang & Zhou 2019 Valid 2 Early Cretaceous


China
Shanweiniao[178] O'Connor et al. 2009 Valid 2 Early Cretaceous


China
Shanweiniao cooperorum.jpg
Shengjingornis[179] Li et al. 2012 Valid 2 Early Cretaceous


China
Shenqiornis[180] Wang et al. 2010 Valid 2 Early Cretaceous


China
Shenshiornis[181] Hu 2010 Junior synonym 2 Early Cretaceous


China Junior synonym of Sapeornis.
Shenzhouraptor[182] Ji et al. 2002 Disputed 2 Early Cretaceous


China Possible synonym of Jeholornis.
Similiyanornis[7] Wang et al. 2020 Valid 2 Early Cretaceous


China
Sinornis[183] Sereno & Rao 1992 Valid 2 Early Cretaceous


China
Sinornis-Beijing Museum of Natural History.jpg
Songlingornis[53] Hou 1997 Valid 2 Early Cretaceous


China
Soroavisaurus[184] Chiappe 1993 Valid 3 Late Cretaceous


Argentina
Struthiosaurus[185] Bunzel 1871 Misidentification N/A N/A Originally thought to be a bird; actually an ankylosaurian dinosaur.
"Styginetta" Stidham 2001 Nomen nudum N/A N/A Obscure; named in a thesis.
Sulcavis[186] O'Connor et al. 2013 Valid 2 Early Cretaceous


China
Sulcavis skull.png
Telmatornis Marsh 1870 Valid 3 Late Cretaceous


United States
Teviornis[187] Kurochkin et al. 2002 Valid 3 Late Cretaceous


Mongolia
Tianyuornis[188] Zheng et al. 2014 Valid 2 Early Cretaceous


China
Tingmiatornis[189] Bono et al. 2016 Valid 3 Late Cretaceous


Canada
Tingmiatornis-3.jpg
Torotix[37] Brodkorb 1963 Valid 3 Late Cretaceous


United States
Tytthostonyx[190] Olson & Parris 1987 Valid 3 Late Cretaceous


United States
Vegavis[191] Clarke et al. 2005 Valid 3 Late Cretaceous


Antarctica
Vegavis restoration.jpg
Vescornis[192] Zhang et al. 2004 Disputed 2 Early Cretaceous


China Possible junior synonym of Jibeinia.
Volgavis[174] Nessov & Yarkov 1989 Valid 3 Late Cretaceous


Russia
Vorona[193] Forster et al. 1996 Valid 3 Late Cretaceous


Madagascar
Wasaibpanchi Malkani 2021 Disputed 3 Late Cretaceous


Pakistan Publication status uncertain.
Wellnhoferia[194] Elżanowski 2001 Disputed 1 Late Jurassic


Germany Possible junior synonym of Archaeopteryx.
Eichstätt Wellnhoferia grandis.jpg
Wyleyia[195] Harrison & Walker 1973 Valid 2 Early Cretaceous


England
Xiangornis[196] Hu et al. 2012 Valid 2 Early Cretaceous


China
Xinghaiornis[197] Wang et al. 2013 Valid 2 Early Cretaceous


China
Xiaotingia[198] Xu et al. 2011 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Xiaotingia fossil.jpg
Yandangornis[199] Cai & Zhao 1999 Valid 3 Late Cretaceous


China
Yandangornis longicaudus.jpg
Yangavis[200] Wang et al. 2018 Valid 2 Early Cretaceous


China
Yanornis[201] Zhou & Zhang 2001 Valid 2 Early Cretaceous


China
Yanornis STM9-52.jpg
Yatenavis[202] Herrera et al. 2022 Valid 3 Late Cretaceous


Argentina
Xu et al. 2015 Valid 1 Late Jurassic


China Considered a non-avialan theropod by some researchers.
Yi qi fossil.jpg
Yixianornis Zhou & Zhang 2001 Valid 2 Early Cretaceous


China
Yixianornis-Paleozoological Museum of China.jpg
Yixianosaurus[203] Xu & Wang 2003 Valid 2 Early Cretaceous


China Considered a non-avialan theropod by some researchers.
Yixianosaurus slab diagram (png).png
Yuanchuavis[204] Wang et al. 2021 Valid 2 Early Cretaceous


China
Yuanchuavis kompsosoura.png
Yuanjiawaornis[205] Hu et al. 2015 Valid 2 Early Cretaceous


China
Yumenornis[40] Wang et al. 2013 Valid 2 Early Cretaceous


China
Yumenornis.png
Yungavolucris[206] Chiappe 1993 Valid 3 Late Cretaceous


Argentina
Yungavolucris holotype tarsometatarsus.png
Yuornis[207] Xu et al. 2021 Valid 3 Late Cretaceous


China
Zhongjianornis[208] Zhou et al. 2010 Valid 2 Early Cretaceous


China
Zhongornis[209] Gao et al. 2008 Valid 2 Early Cretaceous


China
Zhouornis[210] Zhang et al. 2013 Valid 2 Early Cretaceous


China
Zhouornis hani.png
Zhylgaia[211] Nessov 1988 Valid 3 Late Cretaceous


Kazakhstan Dating is uncertain; may be Late Cretaceous or Paleogene.
Zhyraornis[110] Nessov 1984 Valid 3 Late Cretaceous


Uzbekistan

See also

References

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