2026 in archosaur paleontology

Further information: 2026 in reptile paleontology and 2026 in paleontology

Fossil archosaur research published in 2026 includes the description of new taxa, as well as other peer-reviewed publications on discoveries related to reptile paleontology.

Pseudosuchians

New pseudosuchian taxa

Name Novelty Status Authors Age Type locality Country Notes Images

Crocodylus lucivenator[1]

Sp. nov

Valid

Brochu et al.

Pliocene

Hadar Formation

Ethiopia

A crocodile, a species of Crocodylus.

Galahadosuchus[2]

Gen. et sp. nov

Valid

Bodenham et al.

Late Triassic (Carnian–Rhaetian)

Cromhall Quarry

United Kingdom

A member of Crocodylomorpha belonging to the family Saltoposuchidae. The type species is G. jonesi.

Sonselasuchus[3]

Gen. et sp. nov

Valid

Smith & Sidor

Late Triassic (Norian)

Chinle Formation

United States
( Arizona)

A member of Poposauroidea belonging to the family Shuvosauridae. The type species is S. cedrus.

General pseudosuchian research

Crocodylomorph research

  • Paixão et al. (2026) describe isolated eggshells and egg clutches from the Upper Cretaceous Adamantina Formation (Brazil) with the egg arrangement similar to those seen in extant crocodilians, including an assemblage of at least 47 eggs representing the largest Mesozoic crocodyliform egg clutch reported to date.[5]
  • Tan et al. (2026) describe new fossil material of Edentosuchus tienshanensis from the Lower Cretaceous Lianmuqin Formation (Xinjiang, China), providing new information on the morphology of members of this species.[6]
  • Herrera, Spindler & Bronzati (2026) redescribe the anatomy and study the phylogenetic affinities of Dakosaurus maximus on the basis of data from a new specimen from the Kimmeridgian Torleite Formation (Germany), and report evidence of preservation of cartilaginous fish (likely hybodontiform) remains within the abdominal cavity of the studied individual.[7]
  • Candeiro et al. (2026) describe a tooth of one of the largest sphagesaurian specimens reported to date from the Upper Cretaceous Adamantina Formation in the Goiás state, representing the first notosuchian record from mid-west Brazil.[8]
  • Barbini et al. (2026) provide new information on the internal cranial anatomy of Pholidosaurus purbeckensis, reporting evidence of greater similarity of the endocranial anatomy to that of goniopholidids than dyrosaurids, and evidence of presence of possible osteological correlates of nasal salt glands.[9]
  • Szegszárdi, Ősi & Rabi (2026) describe a new partial skull of Doratodon carcharidens from the Santonian Csehbánya Formation (Hungary), reinterpret this species as a paralligatorid, and reinterpret Ogresuchus furatus as a neosuchian likely to be an atoposaurid.[10]
  • Prondvai et al. (2026) report evidence of Hunter-Schreger band-like patterns in the tooth enamel of Iharkutosuchus (interpreted as differing in structural origin from Hunter-Schreger bands of mammals), as well as evidence of wavy enamel in the studied crocodyliform (a feature also known in ornithopod dinosaurs), interpreted as likely adaptations to a herbivorous diet and high-efficiency chewing.[11]
  • Redescription and a study on the affinities of Thoracosaurus isorhynchus is published by Boerman et al. (2026).[12]
  • Donzé et al. (2026) describe the morphology of endocranial structures of Leidyosuchus canadensis and Stangerochampsa mccabei.[13]
  • Cidade et al. (2026) revise the phylogenetic nomenclature of Caimaninae, defining new clades Bottosauria, Caimanini, Purussauria and Purussauridae.[14]
  • Agne et al. (2026) identify the extinct crocodile population from Seychelles as representing the westernmost known population of saltwater crocodiles on the basis of analysis of mitochondrial genomes.[15]

Non-avian dinosaurs

New dinosaur taxa

Name Novelty Status Authors Age Type locality Country Notes Images

Dasosaurus[16]

Gen. et sp. nov

Valid

Mayer et al.

Early Cretaceous (Aptian)

Itapecuru Formation

Brazil

A sauropod belonging to the group Somphospondyli. The type species is D. tocantinensis.

Doolysaurus[17]

Gen. et sp. nov

Valid

Jung et al.

Cretaceous (Albian–Cenomanian)

Ilseongsan Formation

South Korea

A thescelosaurid ornithischian. The type species is D. huhmini.

Ferenceratops[18]

Gen. et comb. nov

Valid

Maidment et al.

Late Cretaceous (Maastrichtian)

Sânpetru and Densuș-Ciula formations

Romania

A ceratopsian. The type species is the 'rhabdodontid' "Zalmoxes" shqiperorum Weishampel et al. (2003).

Foskeia[19]

Gen. et sp. nov

Valid

Dieudonné et al.

Early Cretaceous (Barremian–Aptian)

Castrillo de la Reina Formation

Spain

A rhabdodontomorph ornithopod. The type species is F. pelendonum.

Haolong[20]

Gen. et sp. nov

Valid

Huang et al.

Early Cretaceous

Yixian Formation

China

An iguanodontian ornithopod. The type species is H. dongi.

Kryptohadros[21]

Gen. et sp. nov

Valid

Magyar et al.

Late Cretaceous (Maastrichtian)

Densuș-Ciula Formation

Romania

A hadrosauroid ornithopod. The type species is K. kallaiae.

Spinosaurus mirabilis[22]

Sp. nov

Valid

Sereno et al.

Late Cretaceous

Farak Formation

Niger

A spinosaurid theropod; a species of Spinosaurus.

Xenovenator[23]

Gen. et sp. nov

Valid

Rivera-Sylva et al.

Late Cretaceous (Campanian)

Cerro del Pueblo Formation

Mexico

A troodontid theropod. The type species is X. espinosai; genus may also contain "Saurornitholestes" robustus Sullivan (2006).

Yantaloong[24]

Gen. et sp. nov

Valid

Zhang et al.

Middle Jurassic

Zhanghe Formation

China

A eusauropod with possible turiasaur affinities. The type species is Y. lini.

Yeneen[25]

Gen. et sp. nov

Valid

Filippi et al.

Late Cretaceous (Santonian)

Bajo de la Carpa Formation

Argentina

A titanosaur sauropod. The type species is Y. houssayi.

General non-avian dinosaur research

  • Aureliano et al. (2026) compare the microstructure of appendicular bones in non-avian dinosaurs and large-bodied mammals, and interpret it as indicating that gigantism was achieved through divergent evolutionary pathways in the two groups.[26]
  • Review of factors influencing the formation of dinosaur tracks is published by Falkingham & Gatesy (2026).[27]
  • Hartmann et al. (2026) provide a method for recognizing patterns of shape variation differentiating dinosaur tracks with the use of unsupervised machine learning, and use it to study affinities of controversial dinosaur tracks, reporting evidence of small, three-toed, bird-like footprints from the Triassic and Early Jurassic falling within the bird-dominated region of morphospace, and evidence of some Middle Jurassic tridactyl tracks from the Isle of Skye (Scotland, United Kingdom) grouping with ornithopods rather than with theropods.[28]
  • Granata et al. (2026) report evidence of impact of erosion on preservation of dinosaur tracks from the Carnian strata of the Lerici ichnosite in Italy (the type locality of Evazoum sirigui).[29]
  • Ait Haddou et al. (2026) report the discovery of new tracksites preserving theropod and quadrupedal dinosaur (possibly stegosaur or sauropod) tracks from the strata of the Jurassic Tilougguit and Guettioua formations (Morocco).[30]
  • Ornithischian and theropod (possibly including large dromaeosaurid) tracks are described from the Lower Cretaceous strata of the Serra do Tucano Formation (Brazil) by Barros et al. (2026).[31]
  • Evidence indicating that dinosaur eggs from the Upper Cretaceous strata of the Wido Volcanics (Wi Island, South Korea) assigned to the ootaxon Propagoolithus widoensis were laid in nests established before the igneous intrusion rather than in a rock that was already metamorphosed as a result of volcanic activity is presented by Kim et al. (2026).[32]
  • Wyenberg-Henzler & Scannella (2026) study a skull of Edmontosaurus from the Hell Creek Formation (Montana, United States) with a tyrannosaurid tooth embedded in the nasal around the time of death of the hadrosaurid, interpreted as likely resulting from a bite to the snout of Edmontosaurus during a predation attempt.[33]

Saurischian research

  • Pawlak et al. (2026) identify lungfish aestivation burrows in the Triassic strata of the Ørsted Dal Formation (Greenland), interpreted as indicative of a seasonally dry climate in the studied area during the late Norian, and indicating that aridity was not a barrier for dispersal of theropods and sauropodomorphs living in the studied area at the time.[34]
  • A new assemblage of sauropod and theropod tracks is described from the Lower Cretaceous (Barremian–Aptian) strata of the Shinekhudag Formation (Mongolia) by Mainbayar et al. (2026).[35]

Theropod research

  • A study on the skull biomechanics and likely feeding behaviors of members of diverse theropod subgroups, with a focus on tyrannosauroids, is published by Johnson-Ransom et al. (2026).[36]
  • Hendrickx (2026) explores the evolution of the dentition in non-coelurosaur theropods (e.g.,Ceratosauria, Megalosauroidea, and Allosauroidea).[37]
  • Evidence from the study of teeth of Allosaurus fragilis, Ceratosaurus dentisulcatus, Irritator challengeri and Tyrannosaurus rex, indicating that tooth position is one of the factors affecting microwear texture in theropod teeth, is presented by Morrison et al. (2026).[38]
  • Drzewiecki et al. (2026) interpret theropod tracks from the Lower Jurassic East Berlin Formation (Connecticut, United States) as produced in an area with an ephemeral lake system rather than at the margin of a perennial lake.[39]
  • Lallensack et al. (2026) reevaluate factors influencing shapes of theropod tracks from the Middle Jurassic of El Mers Group (Morocco) and from the Lower Cretaceous Cameros Basin (Spain), and interpret the type ichnospecies of the ichnogenera Saurexallopus, Magnoavipes, Theroplantigrada, Ordexallopus and Archaeornithipus as nomina dubia.[40]
  • Evidence from the study of theropod footprints from the Lower Cretaceous Enciso Group (Spain), indicating that differences in morphology of the studied footprints reflect distinct phases of running involving different foot postures and load distributions, is presented by Díaz-Martínez et al. (2026).[41]
  • Charles, Polet & Hutchinson (2026) reconstruct the optimal jumping performance of Coelophysis bauri as overall similar to that of extant elegant crested tinamou, but achieved through different joint kinematics and muscle work throughout the hindlimbs, and report evidence of potential impact of the long, mobile tail on jumping performance.[42]
  • Oswald & Curtice (2026) report evidence of similarities of morphometrics of teeth of Ceratosaurus and sabers of machairodontines, and argue that dentition of Ceratosaurus might have been adaptation to quick killing of middle-sized prey.[43]
  • Rowe, Cerroni & Rayfield (2026) study mechanical performance of skulls of Ceratosaurus, Masiakasaurus, Carnotaurus and Majungasaurus, and report evidence of adaptations of skulls of large abelisaurs to resist feeding-induced loads, suggestive of similarity of ecological roles of abelisaurs and tyrannosaurs, as well as possible evidence of adaptation of Masiakasaurus to capture of small prey.[44]
  • Seculi Pereyra et al. (2026) review the history of studies on abelisaurid phylogeny, and provide recommendations for future studies.[45]
  • Seculi Pereyra (2026) studies the evolution of abelisaurid orbit shape, interpreted as more likely influenced by selective pressures such as those related to specialized predation than by phylogenetic constraints.[46]
  • Pradelli et al. (2026) describe the anatomy of the axial skeleton of Piatnitzkysaurus floresi.[47]
  • An isolated theropod tooth with possible metriacanthosaurid affinities is reported from the Upper Jurassic–Lower Cretaceous strata of the Phu Kradung Formation (Thailand) by Samathi, Suteethorn & Suteethorn (2026).[48]
  • Nielsen et al. (2026) identify tooth marks on a tyrannosaurid metatarsal BDM 124 from the Judith River Formation (Montana, United States) as produced by a small-bodied, likely juvenile tyrannosaurid scavenging on a larger individual.[49]
  • Evidence of preservation of micro- and nanoscale histological features (including Haversian canal and lacunocanalicular network permineralization) in bones of Albertosaurus sarcophagus from the Horseshoe Canyon Formation (Alberta, Canada) is presented by Williams et al. (2026).[50]
  • Longrich et al. (2026) report the discovery of a tibia of a large-bodied tyrannosaurid from the Campanian strata of the Kirtland Formation (New Mexico, United States), interpreted as likely to be a bone of an early representative of Tyrannosaurini.[51]
  • Woodward, Myhrvold & Horner (2026) reconstruct the life history of Tyrannosaurus on the basis of bone histology, reporting evidence of a more gradual annual growth rate slope than indicated by earlier studies and evidence of a protracted subadult stage, and find that growth trajectories of the tyrannosaur specimens BMRP 2002.4.1 (the holotype of Nanotyrannus lethaeus) and BMRP 2006.4.4 did not fit the T. rex growth curve model.[52]
  • A study on the locomotion of Tyrannosaurus, indicative of similarity of foot-strike patterns to those of the ostrich, is published by Boeye et al. (2026).[53]
  • Makovicky et al. (2026) report the discovery of a new specimen of Alnashetri cerropoliciensis from the Candeleros Formation (Argentina), providing new information on the anatomy of members of this species; the authors also interpret the Late Jurassic theropod vertebra described by Makovicky (1997),[54] the theropod astragalus YPM 9163 from Como Bluff (Morrison Formation, Wyoming, United States; formerly referred to Coelurus fragilis) and Calamosaurus foxi as alvarezsauroids, and study the phylogenetic relationships and evolutionary history of members of this group, interpreting it as having Pangaean ancestral distribution.[55]
  • Meso et al. (2026) redescribe the anatomy of the holotype specimen of Bonapartenykus ultimus.[56]
  • Su et al. (2026) determine heat transfer during the incubation of a clutch of oviraptorid eggs on the basis of incubation experiments, and find that oviraptorid parents transferred heat to their eggs less efficiently than extant birds and depended in part on environmental heat sources for incubation.[57]
  • Hefler et al. (2026) study the aerodynamics of Microraptor during flight, reporting evidence of beneficial impact of forewing–hindwing interactions on flow dynamics.[58]
  • The first deinonychosaurian (probably troodontid) track from Japan is described from the Lower Cretaceous Kitadani Formation by Tsukiji, Hattori & Azuma (2026).[59]
  • Review of evidence of troodontid dietary habits is published by Fan, Miller & Pittman (2026).[60]
  • García-Gil et al. (2026) identify isolated theropod teeth from the Upper Cretaceous El Gallo Formation (Mexico) as belonging to dromaeosaurids, troodontids, maniraptorans of uncertain affinities and indeterminate theropods.[61]

Sauropodomorph research

  • A footprint and an associated tail trace that were probably produced by a bipedal sauropodomorph, representing the oldest dinosaur trace fossil from Australia reported to date, are described from the Carnian strata of the Aspley Formation in Queensland by Romilio & Runnegar (2026).[62]
  • Campos et al. (2026) describe the fossil material and study the bone histology of a small-bodied, juvenile sauropodomorph from the Upper Triassic strata from the Cerro da Alemoa site (Santa Maria Formation, Brazil), representing the smallest well-preserved skeletal remains of a sauropodomorph from Brazil reported to date.[63]
  • Xing et al. (2026) report the discovery of probable sauropodomorph tracks from a new tracksite from the Upper Triassic Xujiahe Formation (Sichuan, China).[64]
  • Chen et al. (2026) determine the oldest sauropodomorph fossils from the Kunming Basin (Yunnan, China) to be 200.17-million-years-old, and interpret this result as evidence of colonization of low palaeolatitude area of southwest China by medium- to large-bodied dinosaurs in the aftermath of the Triassic–Jurassic extinction.[65]
  • Evidence from the study of tooth morphology and replacement patterns, indicative of diverse feeding ecologies of Early Jurassic sauropods from the Cañadón Asfalto Basin (Argentina), is presented by Gomez, Carballido & Pol (2026).[66]
  • The largest sauropod tracksite from the Lower Cretaceous Madongshan Formation (Ningxia, China), preserving tracks with a morphology intermediate between those typical of Brontopodus and Parabrontopodus tracks, is described by Yang et al. (2026).[67]
  • Sauropod tracks produced in wet aeolian environmental, possibly while the trackmakers travelled towards a habitat with greater resource availability, are described from the Lower Cretaceous Três Barras Formation (Brazil) by Nascimento et al. (2026).[68]
  • Casts of sauropod teeth from a private quarry near Skull Creek in northwestern Colorado (United States) interpreted as the first record of a member of Turiasauria from the Upper Jurassic Morrison Formation are described by Foster, Woodruff & Royo-Torres (2026).[69]
  • Foster et al. (2026) review the history of excavation and study of the fossil material of Dystrophaeus viaemalae, review the geological setting of the fossil material, and interpret the morphology of the fossil material of D. viaemalae (including additional material collected since 2014) as unlikely to be a member of Diplodocoidea.[70]
  • Lerzo (2026) reevaluates Nopcsaspondylus alarconensis and considers it to be a nomen dubium.[71]
  • The sauropod specimen MMCh-PV 47 from the Candeleros Formation (Argentina), originally described as a titanosaur by Otero et al. (2011),[72] is interpreted as a rebbachisaurid by Lerzo (2026), providing new information on the tail musculature of members of this group.[73]
  • Garderes, Lerzo & Knoll (2026) study the endocranial morphology of Sidersaura marae, and report evidence indicating that rebbachisaurids might have differed from other sauropods in the variation in hearing capabilities relative to body size.[74]
  • Garderes et al. (2026) present a reconstruction of the cranial musculature of Bajadasaurus pronuspinax.[75]
  • Hullinger et al. (2026) describe apatosaurine remains from Arches National Park (Utah, United States), representing a medium-sized yet geologically young member of the group.[76]
  • A vertebra interpreted as the northernmost record of Barosaurus lentus from the Morrison Formation reported to date is described from the Pryor Mountains (Montana, United States) by Woodruff et al. (2026).[77]
  • van der Linden et al. (2026) report on a specimen of Barosaurus with a pathology in the "whip" part of the tail.[78]
  • Carpenter, Ikejiri & Wilson (2026) study the anatomy of postcranial skeleton of two immature specimens of Camarasaurus lentus from the strata of the Morrison Formation from Dinosaur National Monument (Utah, United States), interpreted as representing sequential stages in the ontogeny of the species and providing new information on its morphological variability.[79]
  • Averianov et al. (2026) describe the first cervical vertebra referable to Tengrisaurus starkovi, and recover it as a basal member of Colossosauria in an updated phylogenetic study including this new material.[80]
  • Pérez Moreno et al. (2026) revise the fossil material attributed to Muyelensaurus pecheni, interpret it as belonging to sauropods from more than one taxon, and restrict M. pecheni to the holotype specimen only.[81]
  • Navarro et al. (2026) describe a titanosaur axis with possible lognkosaurian affinities from the Upper Cretaceous São José do Rio Preto Formation (Brazil), providing evidence of presence of a sauropod with body dimensions comparable to those of Futalognkosaurus in the Bauru Group prior to the Campanian, and report evidence of presence of phylogenetically informative character in the sauropod axis vertebrae.[82]
  • Alessandretti et al. (2026) describe sauropod undertracks from the Upper Cretaceous Capacete Formation (Brazil), determine the environmental conditions that resulted in their formation and preservation, and interpret the sedimentological and paleontological data from the Sanfranciscana Basin coupled with reconstructions of Late Cretaceous climate as suggestive of sauropod migrations from the Bauru Basin to the Sanfranciscana Basin.[83]

Ornithischian research

Thyreophoran research

  • Hunt-Foster et al. (2026) describe portions of forelimbs of an indeterminate stegosaurid from the Brushy Basin Member of the Morrison Formation (Utah, United States), estimated to be the largest stegosaurid specimen from the Morrison Formation reported to date.[84]
  • Costa (2026) identifies five additional occurrences of dacentrurine stegosaur fossils (besides the holotype of Alcovasaurus/Miragaia longispinus) in the Upper Jurassic strata of the Morrison Formation (United States).[85]
  • A juvenile specimen representing the smallest individual of Stegosaurus stenops reported to date is described from the strata of the Morrison Formation in Wyoming (United States) by Carpenter (2026).[86]
  • New thyreophoran fossil material with probable stegosaurian affinities is described from the Lower Cretaceous (Berriasian–Valanginian) Bajada Colorada Formation (Argentina) by Riguetti et al. (2026).[87]
  • Agnolín et al. (2026) report the discovery of new fossil material of Patagopelta cristata, providing new information on the anatomy of members of this species and supporting its placement within Parankylosauria.[88]
  • Yoon et al. (2026) identify probable ankylosaurid tracks, referred to as cf. Ruopodosaurus, from the Cenomanian Jindong Formation (South Korea).[89]

Cerapod research

  • Three iguanodontian specimens with a morphology distinct from those of members of the genera Dryosaurus and Camptosaurus are described from the strata of the Morrison Formation from the Simon Quarry (Wyoming, United States) by Krumenacker et al. (2026).[90]
  • Galton & Carpenter (2026) redescribe the anatomy of the holotype and paratypes of Camptosaurus dispar and the holotype of C. medius, and support the interpretation of C. medius, C. nanus and C. browni as junior synonyms of C. dispar.[91]
  • Gônet, Allain & Houssaye (2026) determine probable locomotor preferences of Iguanodon bernissartensis, Ouranosaurus nigeriensis and Lurdusaurus arenatus, interpreting the studied taxa as likely obligate quadrupeds, and interpreting Lurdusaurus as the first known graviportal ornithopod.[92]
  • Ma et al. (2026) study the taphonomy and age profile of the assemblage dominated by specimens of Bactrosaurus johnsoni from the Upper Cretaceous Iren Dabasu Formation (China) collected during fieldwork conducted in 2014 and 2015, report that the assemblage is dominated by nestling and juvenile individuals (interpreted as consistent with population segregation between juveniles and adults and with herding behavior of B. johnsoni), and interpret the studied fossil assemblage as likely affected by an attritional mortality pattern.[93]
  • Yu et al. (2026) report the first discovery of lambeosaurine hadrosaurid fossil material from the Campanian Nenjiang Formation (China), interpreted by the authors as supporting Asian origin of the group.[94]
  • Dudgeon, Brown & Evans (2026) describe the internal crest anatomy of mature individuals of Corythosaurus casuarius, C. intermedius and Lambeosaurus lambei.[95]
  • Hunter & Janis (2026) compare tooth wear in juvenile and adult individuals of Maiasaura peeblesorum, and report evidence of differences interpreted as consistent with a shift from feeding on nutritious, low-fiber plants to feeding on nutritionally poor, high-fiber plants during the life of the studied dinosaur.[96]
  • Bateman & Larsson (2026) compare the cranial musculature and likely feeding performance of Stegoceras validum and other ornithischians, providing evidence of greater similarity of the feeding performance of S. validum to those of basal ornithischians and ornithopods than to that of Psittacosaurus lujiatunensis, and interpret their findings as indicating that evolution of cranial domes of pachycephalosaurs constrained the evolution of their jaw musculature and their feeding performance.[97]
  • Moore et al. (2026) describe postcranial remains of an indeterminate, early juvenile pachycephalosaur specimen from the Maastrichtian Frenchman Formation (Saskatchewan, Canada), representing the ontogenetically youngest pachycephalosaur postcranium reported to date.[98]
  • Maidment et al. (2026) use new remains of Ajkaceratops kozmai from the Late Cretaceous Csehbánya Formation (Hungary) to conclude that this species is confidently a ceratopsian, "Mochlodon" vorosi is a junior synonym of this species, and Late Cretaceous Europe preserves a previously unrecognized diversity of horned dinosaurs represented by taxa otherwise accepted as 'rhabdodontids', despite previous records having suggested the contrary.[18]
  • Reconstruction of the nasal soft tissues of ceratopsids is presented by Tada et al. (2026).[99]

Birds

New bird taxa

Name Novelty Status Authors Age Type locality Country Notes Images

Gorgonavis[100]

Gen. et sp. nov

Valid

Nebreda et al.

Early Cretaceous (Barremian)

La Huérguina Formation

Spain

A member of Enantiornithes belonging or related to the family Longipterygidae. The type species is G. alcyone.

Kunpengornis[101]

Gen. et sp. nov

Valid

Huang et al.

Early Cretaceous

Jiufotang Formation

China

A euornithean. The type species is K. anhuimusei. Announced in 2025, the final article version was published in 2026.

Meterchen[102]

Gen. et sp. nov

Valid

Tennyson et al.

Miocene

Bannockburn Formation

New Zealand

A probable goose. The type species is M. luti.

Porphyrio claytongreenei[103]

Sp. nov

Valid

Worthy et al.

Pleistocene

New Zealand

A swamphen.

Pujatopouli[104]

Gen. et sp. nov

Valid

Irazoqui et al.

Late Cretaceous (Maastrichtian)

Lopez de Bertodano Formation

Antarctica

A probable member of Neoaves with affinities with the group Aequornithes. The type species is P. soberana. Announced in 2025, the final article version was published in 2026.

Rhynchaeites mcfaddeni[105]

Sp. nov

Valid

Ksepka et al.

Eocene

Green River Formation

United States ( Wyoming)

A stem-ibis.

Shargaotis[106]

Gen. et sp. nov

Valid

Zelenkov

Miocene

Mongolia

A bustard. The type species is S. ignipes. Published online in 2026, but the issue date is listed as December 2025.

Strigops insulaborealis[103]

Sp. nov

Valid

Worthy et al.

Pleistocene

New Zealand

A parrot related to the kākāpō.

Vegavis geitononesos[107]

Sp. nov

Valid

Irazoqui et al.

Late Cretaceous (Maastrichtian)

López de Bertodano Formation

Antarctica

A neornithine; a species of Vegavis.

Vegavis notopothousa[107]

Sp. nov

Valid

Irazoqui et al.

Late Cretaceous (Maastrichtian)

López de Bertodano Formation

Antarctica

A neornithine; a species of Vegavis.

Avian research

  • Benito et al. (2026) contest the conclusions of the study of Wilken et al. (2025)[108] about the evolution of the ability of birds to move parts of the skull independently, arguing that these conclusions were based on inadequate taxon sampling and morphological misinterpretations;[109] in response Wilken et al. (2026) agree that the bone interpreted in the 2025 study as a coracoid of Janavis is more likely to be a pterygoid, but question the affinities of this bone among Mesozoic birds, and overall reaffirm their original conclusion that powered prokinesis is most likely an autapomorphy of neognath birds.[110]
  • Jo et al. (2026) report the first discovery of Mesozoic avialan-type eggs from Korea, discovered in the mid-Cretaceous strata of the Ilseongsan Formation (South Korea), and name a new ootaxon Onggwanoolithus aphaedoensis.[111]
  • Hellyer-Price, Venditti & Humphries (2026) calculate the drag on the bill of Pelagornis while skimming, and argue that the studied bird was likely unable to skim-feed.[112]
  • De los Reyes, Acosta Hospitaleche & Sosa (2026) report the discovery of a tarsometatarsus of the grey-cowled wood rail from the strata of the La Esperanza Formation (Buenos Aires Province, Argentina), interpreted as suggestive of presence of seasonal wetlands and/or humid scrublands in the studied area during the early Pleistocene.[113]
  • Lenser, Reed & Worthy (2026) interpret the fossil record of shorebirds from the Blanche Cave (South Australia) as indicative of mostly terrestrial environment in the studied area in the Pleistocene, including open forest and woodland but also with wetland elements, and interpret changes of composition of the studied assemblage as indicative of decrease in available wetlands at the end of the Last Glacial Maximum.[114]
  • Mayr & Richter (2026) describe new fossil material of Hassiavis laticauda from the Eocene Messel Formation (Germany), providing new information on the anatomy of members of this species, and reevaluate the phylogenetic affinities of Archaeotrogonidae.[115]
  • Fossil material of members of two honeyguide species, representing the earliest record of members of this group reported to date, is described from the Pliocene strata of the Varswater Formation from the Langebaanweg site (South Africa) by Louchart, Manegold & Pavia (2026).[116]
  • A study on the bone histology of Andrewsornis abbotti and Physornis fortis, providing evidence of uninterrupted growth strategy in phorusrhacids, is published by Dreyer, Cooper & O'Connor (2026).[117]
  • Mayr (2026) studies the phylogenetic relationships of Parapsittacopes and Psittacomimus, assigning them to the new family Psittacomimidae interpreted as likely sister group of Parapasseres (the clade formed by the Zygodactylidae and Passeriformes).[118]
  • A study on the phylogenetic relationships of the Hawaiian honeyeaters, indicative of a relationships with the clade including the families Hypocoliidae and Hylocitreidae rather than a sister relationship with Hypocoliidae alone, is published by Zhao, Kimball & Braun (2026).[119]
  • Farina, Krapovickas & Marsicano (2026) study the composition of the bird track assemblage from the Miocene Vinchina Formation (Argentina), including the oldest rheiform track in southern South America reported to date and probable phorusrhacid track.[120]
  • Zelenkov et al. (2026) report the discovery of fossil material of a new late Pleistocene bird fauna from the Khondu locality (Sakha Republic, Russia), including at least 25 taxa.[121]
  • A study on the composition on the middle Holocene avian assemblage from the Cueva del Llano site (Fuerteventura, Canary Islands), providing evidence of presence of taxa typical of forest environments and the edges of bodies of water, is published by Sánchez-Marco, Sánchez-Sastre & Castillo (2026).[122]

Pterosaurs

New pterosaur taxa

Name Novelty Status Authors Age Type locality Country Notes Images

Pterosaur research

Other archosaurs

Other new archosaur taxa

Name Novelty Status Authors Age Type locality Country Notes Images

Other archosaur research

General research

  • García-Cobeña et al. (2026) report the discovery of new fossil material of vertebrates, including crocodylomorphs and dinosaurs, from the Lower Cretaceous El Castellar Formation (Spain), expanding known vertebrate diversity from the studied formation.[128]

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