The year 2011 in Archosaur paleontology was eventful. Archosaurs include the only living dinosaur group — birds — and the reptile crocodilians, plus all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosaur palaeontology is the scientific study of those animals, especially as they existed before the Holocene Epoch began about 11,700 years ago. The year 2011 in paleontology included various significant developments regarding archosaurs.
This article records new taxa of fossil archosaurs of every kind that have been described during the year 2011, as well as other significant discoveries and events related to paleontology of archosaurs that occurred in the year 2011.
Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
---|---|---|---|---|---|---|---|---|
Acherontisuchus[1] | Gen. et sp. | Valid |
| Middle/Late Paleocene | Cerrejón Formation | A dyrosaurid. | ||
Anteophthalmosuchus[2] | Gen. et sp. | Valid |
| Early Cretaceous | Wealden Group | A goniopholidid. | ||
Arenysuchus[3] | Gen. et sp. | Valid |
| Maastrichtian | Tremp Formation | A stem crocodyloid. | ||
Caipirasuchus[4] | Gen. et sp. | Valid |
| Turonian/Santonian | Adamantina Formation | A sphagesaurid. | ||
Campinasuchus[5] | Gen. et sp. | Valid |
| Turonian/Santonian | Adamantina Formation | A baurusuchid. | ||
Caryonosuchus[7] | Gen. et sp. | Valid |
| Campanian/Maastrichtian | Adamantina Formation | A sphagesaurid. | ||
Decuriasuchus[9] | Gen. et sp. | Valid |
| Ladinian | Santa Maria Formation | Skeletons indicate possible group behavior. | ||
Fruitachampsa[10] | Gen. et sp. | Valid |
| Late Jurassic | Morrison Formation | A shartegosuchid. | ||
Goniopholis kiplingi[11] | Species | Valid |
| Berriasian | Purbeck Limestone Group | A goniopholidid. | ||
Goniopholis willetti | Species | Valid |
| Early Cretaceous | Wealden Group | A goniopholidid. Originally described as a species of Goniopholis; it was subsequently made the type species of a separate genus Hulkepholis.[13] | ||
Labidiosuchus[14] | Gen. et sp. | Valid |
| Maastrichtian | Marília Formation | A notosuchian. | ||
Leiokarinosuchus | Gen. et sp. | Disputed |
| Early Cretaceous | Wealden Group | A neosuchian. Jouve (2017) considered it to be a junior synonym of Anteophthalmosuchus.[16] | ||
Lorosuchus[17] | Gen. et sp. | Valid |
| Paleocene | Río Loro Formation | A sebecid. | ||
Neptunidraco[18] | Gen. et sp. | Valid |
| late Bajocian/early Bathonian | Rosso Ammonitico Veronese Formation | The oldest known metriorhynchid. | ||
Pepesuchus[19] | Gen. et sp. | Valid |
| Campanian/Maastrichtian | Presidente Prudente Formation | A peirosaurid. | ||
Pietraroiasuchus[21] | Gen. et sp. | Valid |
| Early Albian | Pietraroia Plattenkalk | A hylaeochampsid. | ||
Pissarrachampsa[23] | Gen. et sp. | Valid |
| Campanian/Maastrichtian | Vale do Rio do Peixe Formation | A baurusuchid. The type species is Pissarrachampsa sera. | ||
Theriosuchus grandinaris[24] | Species | Valid |
| Berriasian/Barremian | Khua Formation | A fifth species of Theriosuchus. | ||
Name | Novelty | Status | Authors | Age | Unit | Location | Images | |
---|---|---|---|---|---|---|---|---|
Acristavus[26] | Gen. et sp. | Valid |
| Campanian | Two Medicine Formation Wahweap Formation | A brachylophosaurin hadrosaurine. | ||
Aeolosaurus maximus[28] [29] | Sp. | Valid |
| Campanian-Maastrichtian | Adamantina Formation | A titanosaur sauropod. Originally described as the third species of Aeolosaurus, but subsequently transferred to the separate genus Arrudatitan.[30] | ||
Ahshislepelta[31] | Gen. et sp. | Valid |
| Late Campanian | Kirtland Formation | An ankylosaurine ankylosaurid. | ||
Albinykus[32] | Gen. et sp. | Valid |
| Late Cretaceous | An alvarezsaurid theropod. | |||
Amtocephale[34] | Gen. et sp. | Valid |
| Turonian-Santonian | Baynshire Formation | A pachycephalosaurid. | ||
Angolatitan[35] | Gen. et sp. | Valid |
| Late Turonian | Itombe Formation | A somphospondylian sauropod. | ||
Arcusaurus[37] | Gen. et sp. | Valid |
| Lower Jurassic | Elliot Formation | Basal Sauropodomorph | ||
Atacamatitan[38] | Gen. et sp. | Valid |
| Late Cretaceous | Tolar Formation | A titanosaur. | ||
Brontomerus[40] | Gen. et sp. | Valid |
| Aptian/Albian | Cedar Mountain Formation | A camarasauromorph sauropod. | ||
Daemonosaurus[41] | Gen. et sp. | Valid |
| Late Triassic | Chinle Formation | A primitive theropod. | ||
Delapparentia[43] | Gen. et sp. | Valid |
| Early Barremian | Camarillas Formation | An iguanodontoid. | ||
Demandasaurus[44] | Gen. et sp. | Valid |
| Late Barremian-early Aptian | Castrillo la Reina Formation | A rebbachisaurid sauropod. | ||
Drusilasaura[46] | Gen. et sp. | Valid |
| Cenomanian/Turonian | Bajo Barreal Formation | A possible lognkosaurian titanosaur. | ||
Eodromaeus[47] | Gen. et sp. | Valid |
| Middle Carnian | Ischigualasto Formation | A basal theropod. | ||
Epichirostenotes[49] | Gen. et sp. | Valid |
| Late Campanian | Horseshoe Canyon Formation | A caenagnathid. | ||
Haya[50] | Gen. et sp. | Valid |
| Late Cretaceous | Javkhlant Formation | Basal ornithopod with many gastroliths. | ||
Jaklapallisaurus[52] | Gen. et. sp. | Valid |
| Late Norian-earliest Rhaetian | Upper Maleri Formation Lower Dharmaram Formation | A plateosaurid. | ||
Koreaceratops[54] | Gen. et sp. | Valid |
| Albian | "Tando beds" | A basal ceratopsian. | ||
Koreanosaurus[55] | Gen. et sp. | Valid |
| ?Santonian/Campanian | Seonso Conglomerate | A hypsilophodontid ornithopod. | ||
Leonerasaurus[57] | Gen. et sp. | Valid |
| Pliensbachian/Toarcian | Las Leoneras Formation | An anchisaurian sauropodomorph. | ||
Leyesaurus[58] | Gen. et sp. | Valid |
| Lower Jurassic | Quebrada del Barro Formation | A massospondylid sauropodomorph. | ||
Linhenykus[60] | Gen. et sp. | Valid |
| Campanian | Wulansuhai Formation | An alvarezsaurid. | ||
Linhevenator[62] | Gen. et sp. | Valid |
| Campanian | Bayan Mandahu Formation | A short-armed troodontid. | ||
Manidens[64] | Gen. et sp. | Vald |
| Aalenian/Early Bathonian | Cañadón Asfalto Formation | A heterodontosaurid. | ||
Nambalia | Gen. et. sp. | Valid |
| Late Norian-earliest Rhaetian | Upper Maleri Formation | A basal sauropodomorph. | ||
Narambuenatitan[65] | Gen. et sp. | Valid |
| lower-middle Campanian | Anacleto Formation | A lithostrotian titanosaur. | ||
Ojoraptorsaurus | Gen. et sp. | Valid |
| Lower Maastrichtian | Ojo Alamo Formation | A caenagnathid. | ||
Omeisaurus jiaoi[66] | Species | Valid |
| Middle Jurassic | Xiashaximiao Formation | A species of Omeisaurus. | ||
Osmakasaurus[68] | Gen. et comb. | Valid |
| Valanginian | Lakota Formation | A new genus for "Camptosaurus" depressus (Gilmore, 1909). | ||
Oxalaia[69] | Gen. et sp. | Valid |
| Cenomanian | Alcântara Formation | Huge spinosaur 12–14 m long. | ||
Pampadromaeus[71] | Gen. et sp. | Valid |
| Carnian | Santa Maria Formation | A very basal sauropodomorph. | ||
Pamparaptor[73] | Gen. et sp. | Valid |
| Turonian/Coniacian | Portezuelo Formation | A deinonychosaur. | ||
Petrobrasaurus[74] | Gen. et sp. | Valid |
| Santonian | Plottier Formation | A titanosaur. | ||
Propanoplosaurus[76] | Gen. et sp. | Valid |
| Early Aptian | Patuxent Formation | A nodosaurid. | ||
Qiupalong[77] | Gen. et sp. | Valid |
| Late Cretaceous | Qiupa Formation | An ornithomimid. | ||
Ratchasimasaurus[79] | Gen. et sp. | Valid |
| Aptian | Khok Kruat Formation | A non-hadrosaurid iguanodontian. | ||
Sarahsaurus[80] | Gen. et sp. | Valid | Sinemurian/Pliensbachian | Kayenta Formation | A basal sauropodomorph | |||
Siamodon[81] | Gen. et sp. | Valid |
| Aptian | Khok Kruat Formation | An advanced iguanodontian. | ||
Spinops[82] | Gen. et sp. | Valid |
| Campanian | Oldman or Dinosaur Park Formation | A centrosaurine ceratopsian. | ||
Stegoceras novomexicanum[84] | Species | Valid |
| Late Campanian | Fruitland Formation Kirtland Formation | Second known species of Stegoceras. | ||
Talos[85] | Gen. et sp. | Valid |
| Late Campanian | Kaiparowits Formation | A troodontid theropod. | ||
Tapuiasaurus[87] | Gen. et sp. | Valid |
| Aptian | Quiricó Formation | A titanosaur. | ||
Teratophoneus[89] | Gen. et sp. | Valid |
| Late Campanian | Kaiparowits Formation | A tyrannosaurine tyrannosaurid. | ||
Thescelosaurus assiniboiensis[91] | Species | Valid |
| Late Maastrichtian | Frenchman Formation | Third known species of Thescelosaurus. | ||
Titanoceratops[92] | Gen. et sp. | Valid |
| Late Campanian | Fruitland or Kirtland Formation | A giant chasmosaurine ceratopsian from New Mexico. | ||
Traukutitan[93] | Gen. et sp. | Valid |
| Santonian | Bajo de la Carpa Formation | A possible lognkosaurian titanosaur. | ||
Uteodon | Gen. et comb. | Valid |
| Late Jurassic | Morrison Formation | A new genus for "Camptosaurus" aphanoecetes (Carpenter & Wilson, 2008). | ||
Veterupristisaurus[94] | Gen. et sp. | Valid |
| Late Kimmeridgian/earliest Tithonian | Tendaguru Formation | A carcharodontosaurid. | ||
Xiaotingia[95] | Gen. et sp. | Valid |
| early Late Jurassic | Tiaojishan Formation | An Archaeopteryx-like paravian. | ||
Xuwulong[97] | Gen. et sp. | Valid |
| Early Cretaceous | Xinminpu Group | A hadrosauriform. | ||
Zhuchengtyrannus[98] | Gen. et sp. | Valid |
| Late Cretaceous | Wangshi Group | A tyrannosaurine tyrannosaurid. | ||
Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
---|---|---|---|---|---|---|---|---|
Alca carolinensis [100] | Sp. nov | Valid | N. Adam Smith | Early Pliocene | Yorktown Formation | An Alcidae related to the razorbill. | ||
Alca minor | Sp. nov | Valid | N. Adam Smith | Early Pliocene | Yorktown Formation | An Alcidae related to the razorbill. | ||
Alca olsoni | Sp. nov | Valid | N. Adam Smith | Early Pliocene | Yorktown Formation | An Alcidae related to the razorbill. | ||
Alectroenas payandeei [101] | Sp. nov | Valid | Julian Pender Hume | Holocene-Recent | A pigeon, Columbidae from Rodrigues Island. | |||
?Aptornis proasciarostratus [102] | Sp. nov. | Valid | Trevor H. Worthy Alan J. D. Tennyson R. Paul Scofield | Early Miocene, Altonian | Manuherikia Group, | The earliest known Aptornithidae Bonaparte, 1856. | ||
Ardea sytchevskayae [103] | Sp. nov. | Valid | Nikita V. Zelenkov | Middle Miocene | An Ardeidae, earliest member of Ardea | |||
Aurorornis taurica[104] | Gen. et sp. nov | Valid | Andrey V. Panteleyev | Eocene (Lutetian) | Crimean Peninsula | An owl belonging to the family Protostrigidae. The type species of the new genus. | ||
Australlus gagensis [105] | Sp. nov. | Valid | Trevor H. Worthy Walter E. Boles | Oligocene-Miocene | Riverleigh | A Rallidae. The type species is Gallinula disneyi Boles, 2005. | ||
Bohaiornis guoi [106] | Gen. nov. et Sp. nov. | Valid | Hu Dongyu Li Li Hou Liannaim | Barremian/Aptian | Yixian Formation | An Enantiornithes Walker, 1981, Bohaiornithidae Wang, Zhou, O’Connor et Zelenkov, 2014. | ||
Buteo praebuteo [107] | Sp. nov | Valid | Denis Sobolev in Sobolev & Marisova | Miocene | An Accipitridae, a species of Buteo. | |||
Buteo sarmathicus | Sp. nov | Valid | Denis Sobolev in Sobolev & Marisova | Miocene | An Accipitridae, a species of Buteo. | |||
Columba thiriouxi | Sp. nov | Valid | Julian Pender Hume | Holocene-Recent | A pigeon, Columbidae from Mauritius. | |||
Colymbiculus udovinchenkoi [108] | Gen. et sp. nov | Valid | Gerald Mayr Evgenij Zvonok | Middle Eocene | Early Lutetian | A Gaviidae, this is the type species of the new genus. | ||
Cyrilavis colburnorum [109] | Species | Valid | Daniel T. Ksepka | Eocene | Green River Formation | A Halcyornithidae Harrison et Walker, 1972, a stem Psittaciformes. | ||
Eostrix tsaganica [110] | Sp. nov | Valid | Evgeney N. Kurochkin | Early Eocene | A Protostrigidae Wetmore, 1933. | |||
Falco bulgaricus [111] | Sp. nov | Valid | Zlatozar N. Boev | Late Miocene | A Falconidae. | |||
Feducciavis loftini [112] | Gen. nov. et Sp. nov. | Valid | Storrs L. Olson | Middle Miocene | Calvert Formation | A Sternidae close to Anous and Procelsterna. | ||
Gallirallus steadmani [113] | Sp. nov. | Valid | Trevor H. Worthy | Quaternary | Subrecent | A Rallidae as big as Gallirallus philippensis from Tubuai, Austral Islands. | ||
Gracilornis jiufotangensis [114] | Gen. et sp. | Valid | Li Li Hou Shi-Lin | Aptian | Jiufotang Formation | An Enatiornithes Walker, 1981. | ||
Heterostrix tatsinensis | Gen. et sp. nov | Valid | Evgeney N. Kurochkin | Early Oligocene | Hsanda Gol Formation | A Heterostrigidae Fam. nov. Kurochkin & Dyke, 2011, this is the type species of the new genus and the type genus of the new family. | ||
Hoazinavis lacustris [115] | Gen. et sp. | Valid | Gerald Mayr Herculano M. F. de Alvarenga | Late Oligocene/Early Miocene | Tremembé Formation | An early Opisthocomidae. | ||
Itaboravis elaphrocnemoides [116] | Gen. et sp. | Valid | Gerald Mayr Herculano M. F. de Alvarenga | Early late Paleocene | Itaboraian | A possible member of Cariamae. This is the type species of the new genus. | ||
Jamna szybiaki [117] | Gen. et sp. | Valid | Zbigniew M. Bochenski Teresa Tomek Malgorzata Bujoczek Krzysztof Wertz | Oligocene | Carpathian flysch | An early Passeriformes. | ||
Kaiika maxwelli [118] | Gen. et sp. | Valid | R. Ewan Fordyce Daniel Thomas | Early Eocene | Kauru Formation | A basal Spheniscidae. | ||
Laricola intermedia [119] | Sp. nov. | Valid | Vanessa L. De Pietri Lodc Costeur Marcel Güntert | Early Miocene | MN 2a | A Charadriiformes, Laricolidae De Pietri, Costeur, Güntert et G. Mayr, 2011. | ||
Laricola robusta | Sp. nov. | Valid | Vanessa L. De Pietri Lodc Costeur Marcel Güntert | Early Miocene | MN 2a | A Charadriiformes, Laricolidae De Pietri, Costeur, Güntert et G. Mayr, 2011. | ||
Lavocatavis africana [120] | Gen. et sp. | Valid | Cécile Mourer-Chauviré Rodolphe Tabuce M’hammed Mahboubi Mohammed Adaci Mustapha Bensalah | Eocene | Glib Zegdou Formation | A Phorusrhacoidea. | ||
Luscinia jurcsaki [121] | Sp. nov | Valid | Eugen Kessler Márton Venczel | Middle Miocene | MN 6-8 | A member of the Muscicapidae | ||
Mancalla lucasi [122] | Sp. nov | Valid | N. Adam Smith | Pliocene or Early Pleistocene | Niguel Formation | A Charadriiformes, Alcidae, Mancallinae L. H. Miller, 1946. | ||
Mancalla vegrandis | Sp. nov | Valid | N. Adam Smith | Pliocene or Early Pleistocene | San Diego Formation San Mateo Formation | A Charadriiformes, Alcidae, Mancallinae L. H. Miller, 1946. | ||
Miomancalla howardae | Gen. et sp. et comb. nov | Valid | N. Adam Smith | Late Miocene to Early Pliocene | Capistrano Formation San Mateo Formation | A Charadriiformes, Alcidae, Mancallinae L. H. Miller, 1946, this is the type species of the new genus, that also contains "Praemancalla" wetmorei Howard (1966). | ||
Mystiornis cyrili [123] | Gen. et sp. | Valid | Evgeny N. Kurochkin Nikita V. Zelenkov Alexandr O. Averianov Sergei V. Leshchinskiy | Barremian/Aptian | Shestakovo-1 locality | |||
Namaortyx sperrgebietensis [124] | Gen. nov. et Sp. nov. | Valid | Cécile Mourer-Chauviré | Middle Eocene | Probably Early Lutetian | A Galliformes Incertae Sedis. This is the type species of the new genus. | ||
Nambashag billerooensis [125] | Gen. nov. et Sp. nov. | Valid | Trevor H. Worthy | Late Oligocene/Early Miocene | Etadunna Formation | A Phalacrocoracidae, this is the type species of the new genus. | ||
Nambashag microglaucus | Sp. nov. | Valid | Trevor H. Worthy | Late Oligocene/Early Miocene | Namba Formation | A Phalacrocoracidae. | ||
Nelepsittacus minimus [126] | Gen. nov. et sp. nov. | Valid | Trevor H. Worthy Alan J. D. Tennyson R. Paul Scofield | Early Miocene | St. Bathans Fauna, Manuherikia Section | A Psittaciformes, Nestoridae, smallest species of the genus and the type species of the new genus. | ||
Nelepsittacus donmertoni | Sp. nov. | Valid | Trevor H. Worthy Alan J. D. Tennyson R. Paul Scofield | Early Miocene | St. Bathans Fauna, Manuherikia Section | A Psittaciformes, Nestoridae. | ||
Nelepsittacus daphneleeae | Sp. nov. | Valid | Trevor H. Worthy Alan J. D. Tennyson R. Paul Scofield | Early Miocene | St. Bathans Fauna, Manuherikia Section | A Psittaciformes, Nestoridae. | ||
Nesoenas cicur | Sp. nov | Valid | Julian P. Hume | Holocene-Recent | A pigeon, Columbidae from Mauritius. | |||
Nogusunna conflictoides [127] | Gen. nov et sp. nov | Valid | Nikita V. Zelenkov | Middle Miocene | Oshin Formation | A diving duck, Anatidae. | ||
Parahongshanornis chaoyangensis [128] | Gen. et sp. nov. | Valid | Li Li Wang Jing-Qi Hou Shi-Lin | Early Cretaceous | Jiufotang Formation | A Hongshanornithidae O’Connor, Gao et Chiappe, 2010. | ||
Pellornis mikkelseni [129] | Gen. et sp. nov | Valid | Sara Bertelli | Earliest Eocene | Fur Formation | A Messelornithidae Hesse, 1988, this is the type species of the new genus. | ||
Piculoides saulcetensis [130] | Gem. nov. et sp. nov. | Valid | Vanessa L. De Pietri
Lodc Costeur | Early Miocene | MN 2 | A Picidae, this is the type species of the new genus. | ||
Protomelanitta gracilis | Gen. nov et sp. nov | Valid | Nikita V. Zelenkov | Middle Miocene | Oshin Formation | A diving duck, Anatidae, this is the type species of the new genus, a second species of the genus is Protomelanitta shihuibas (Hou, 1985), formally known as Aythya shihuibas Hou, 1985. | ||
Qiliania graffini [131] | Gen. et sp. | Valid | Ji Shu-An Jessie Atterholt Jerald D. Harris Li Da-Qing You Hai-Lu | Aptian | Xiagou Formation | An Enantiornithes Walker, 1981. | ||
Sharganetta mongolica | Gen. nov et sp. nov | Valid | Nikita V. Zelenkov | Middle Miocene | Oshin Formation | A diving duck, Anatidae, this is the type species of the new genus. | ||
Sternalara milneedwardsi | Sp. nov. | Valid | Vanessa L. De Pietri Lodc Costeur Marcel Güntert | Early Miocene | MN 2a | A Charadriiformes, family Incertae Sedis. | ||
Sternalara minuta | Gen. nov. et sp. nov. | Valid | Vanessa L. De Pietri Lodc Costeur Marcel Güntert | Early Miocene | MN 2a | A Charadriiformes, family Incertae Sedis this is the type species of the genus. | ||
Tonsala buchanani[132] | Sp. nov | jr synonym | Dyke, Wang, & Habib | Oligocene | Pysht Formation | A plotopterid. Transferred it to Klallamornis(2021).[133] | thumb|center|upright|Klallamornis buchanani | |
Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images |
---|---|---|---|---|---|---|---|---|
Aurorazhdarcho[134] | Gen. et sp. | Valid |
| Tithonian | Solnhofen limestone | An azhdarchoid or a ctenochasmatid.[135] The type species, Aurorazhdarcho primordius, was subsequently found to be synonymous with "Pterodactylus" micronyx von Meyer (1856); however, Aurorazhdarcho was retained as a distinct genus, creating a new combination Aurorazhdarcho micronyx. | ||
Aussiedraco[136] | Gen. et sp. | Valid |
| Albian | Toolebuc Formation | An ornithocheiroid. | ||
Barbosania[137] | Gen. et sp. | Valid |
| Cenomanian | Santana Formation | An ornithocheirid. | ||
Darwinopterus robustodens[138] | Species | Valid | Middle Jurassic | Tiaojishan Formation | A darwinopterid. | |||
Jianchangopterus[140] | Gen. et sp. | Valid |
| Middle Jurassic | Tiaojishan Formation | A rhamphorhynchid. | ||
Navajodactylus[141] | Gen. et sp. | Valid |
| Late Campanian | Kirtland Formation Dinosaur Park Formation | A possible azhdarchid. | ||
Pterofiltrus[142] | Gen. et sp. | Valid |
| Early Cretaceous | Yixian Formation | A ctenochasmatid. | ||
Unwindia[143] | Gen. et sp. | Valid |
| Cenomanian | Santana Formation | A basal ctenochasmatoid. | ||