2024 in archosaur paleontology

List of years in archosaur paleontology
… 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 …
In reptile paleontology 2021 2022 2023 2024 2025 2026 2027 In paleontology 2021 2022 2023 2024 2025 2026 2027 In science 2021 2022 2023 2024 2025 2026 2027
Art Archaeology Architecture Literature Music Philosophy Science +...

This article records new taxa of every kind of fossil archosaur that are scheduled to be described during 2024, as well as other significant discoveries and events related to the paleontology of archosaurs that will be published in 2024.

Pseudosuchians

New pseudosuchian taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes	Images
Aphaurosuchus kaiju	Sp. nov	In press	Martins et al.	Late Cretaceous	Adamantina Formation	Brazil	A baurusuchid. Announced in 2023; the final article version was published in 2024.
Asiatosuchus oenotriensis	Sp. nov		Narváez et al.	Eocene (Lutetian)		Spain	A basal member of Crocodyloidea.
Garzapelta	Gen. et sp. nov		Reyes, Martz & Small	Late Triassic (Norian)	Cooper Canyon Formation	United States (Texas)	An aetosaur. The type species is G. muelleri.
Ophiussasuchus	Gen. et sp. nov	Valid	López-Rojas et al.	Late Jurassic (Kimmeridgian-Tithonian)	Lourinhã Formation	Portugal	A goniopholidid crocodylomorph. The type species is O. paimogonectes.
Schultzsuchus	Gen. et comb. nov		Desojo & Rauhut	Triassic (Ladinian-Carnian)	Pinheiros-Chiniquá Sequence of the Santa Maria Supersequence	Brazil	A member of Paracrocodylomorpha, probably belonging to the group Poposauroidea. The type species is "Prestosuchus" loricatus von Huene (1938).
Varanosuchus	Gen et sp. nov	In press	Pochat-Cottilloux et al.	Early Cretaceous	Sao Khua Formation	Thailand	An atoposaurid. The type species is V. sakonnakhonensis.

General pseudosuchian research

• A study on the anatomy of the skull and on the neurology of Tarjadia ruthae is published by Desojo et al. (2024).
• Redescription of the skeletal anatomy of Shuvosaurus inexpectatus is published by Nesbitt & Chatterjee (2024).
• Mastrantonio et al. (2024) describe the anatomy of the postcranial skeleton of the most complete specimen of Prestosuchus chiniquensis reported to date, and revise the diagnosis for P. chiniquensis.

Crocodylomorph research

• Young et al. (2024) provide higher level systematization for Thalattosuchia under both the PhyloCode and the International Code of Zoological Nomenclature, naming new taxa Neothalattosuchia, Euthalattosuchia and Dakosaurina.
• A study on the morphology of osteoderms of Indosinosuchus and an unnamed member of Mesoeucrocodylia from the Late Jurassic Phu Noi excavation site (Thailand) is published by Bhuttarach et al. (2024).
• Weryński et al. (2024) identify a teleosauroid rostrum from the Częstochowa Sponge Limestone Formation (Poland) as belonging to a non-machimosaurin machimosaurid feeding on large prey, with morphological similarities to Neosteneosaurus edwardsi and Proexochokefalos heberti, providing evidence that such teleosauroids were present outside of Western Europe during the Oxfordian.
• Scheyer et al. (2024) describe teleosauroid tooth crowns associated with ichthyosaur remains (with scavenging traces also produced by a teleosauroid) from the Bajocian Hauptrogenstein Formation (Switzerland), representing the oldest fossil material of a member of the tribe Machimosaurini reported to date.
• Hua, Liston & Tabouelle (2024) describe a specimen of Metriorhynchus cf. superciliosus from the Callovian strata from the "Vaches Noires" cliffs of Villers-sur-Mer (France), preserved with gastric contents that include remains of the gill apparatus of Leedsichthys, and interpret the studied specimen as providing evidence of Metriorhynchus scavenging on the remains of Leedsichthys.
• A study on the bone histology of Araripesuchus buitreraensis, providing evidence of generally slow, annually interrupted growth rate, is published by Navarro et al. (2024).
• Evidence of a continuous and coordinated tooth replacement in Armadillosuchus arrudai, ensuring that the animal would not lose too many teeth simultaneously and that its feeding abilities were not affected by tooth loss, is presented by Borsoni, Carvalho & Marinho (2024).
• Dos Santos et al. (2024) describe the skeletal anatomy of the most complete juvenile baurusuchid specimen reported to date, and report evidence of differences in skull ornamentation and muscle development between juvenile and adult baurusuchid specimens which might be indicative of ontogenetic niche partitioning.
• Fossil material of a goniopholidid, interpreted as a basal form that shared several anatomical traits with derived members of the group, is described from the Lower Cretaceous Kitadani Formation (Japan) by Obuse & Shibata (2024).
• Yates & Stein (2024) interpret Ultrastenos willisi and "Baru" huberi as synonymous, but maintain Ultrastenos as a distinct mekosuchine genus, resulting in a new combination Ultrastenos huberi.
• Redescription of Arambourgia gaudryi is published by Conedera et al. (2024), who recover A. gaudryi as an alligatorine, and interpret it as a semi-terrestrial animal.
• Redescription of Crocodylus palaeindicus and a study on the phylogenetic relationships of members of Crocodyloidea is published by Chabrol et al. (2024), who consider Crocodylus sivalensis to be a junior synonym of C. palaeindicus, find evidence of a close relationship of Crocodylus checchiai and Crocodylus falconensis with extant American crocodiles, recover Kinyang as a crocodyline rather than osteolaemine, recover Albertosuchus knudsenii, Prodiplocynodon langi and "Crocodylus" affinis outside Crocodyloidea, and consider an alligatoroid placement for the clade Orientalosuchina to be highly labile.

Non-avian dinosaurs

New dinosaur taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes	Images
Chakisaurus	Gen. et sp. nov		Alvarez Nogueira et al.	Late Cretaceous (Cenomanian-Turonian)	Huincul Formation	Argentina	An elasmarian ornithopod. The type species is C. nekul.
Datai	Gen. et sp. nov	Valid	Xing et al.	Late Cretaceous (Turonian-Early Coniacian)	Zhoutian Formation	China	An ankylosaurid. The type species is D. yingliangis.
Eoneophron	Gen. et sp. nov		Atkins-Weltman et al.	Late Cretaceous (Maastrichtian)	Hell Creek Formation	United States (South Dakota)	A caenagnathid theropod. The type species is E. infernalis.
Gandititan	Gen. et sp. nov	Valid	Han et al.	Late Cretaceous (Cenomanian-Turonian)	Zhoutian Formation	China	A titanosaur sauropod. The type species is G. cavocaudatus.
Hesperonyx	Gen. et sp. nov	Valid	Rotatori et al.	Late Jurassic	Lourinhã Formation	Portugal	An early diverging iguanodontian ornithopod, possibly a dryomorphan. The type species is H. martinhotomasorum.
Inawentu	Gen. et sp. nov	Valid	Filippi et al.	Late Cretaceous (Santonian)	Bajo de la Carpa Formation	Argentina	A titanosaur sauropod. The type species is I. oslatus. Announced in 2023; the final article version was published in 2024.
"Jingia"	Gen. et sp. nov		Ren et al.	Late Jurassic	Dongxing Formation	China	A mamenchisaurid sauropod. The type species is J. dongxingensis. The name is preoccupied by Jingia Chen, 1983.
Minqaria	Gen. et sp. nov		Longrich et al.	Late Cretaceous (Maastrichtian)	Ouled Abdoun Basin	Morocco	A lambeosaurine hadrosaurid belonging to the tribe Arenysaurini. The type species is M. bata.
Riojavenatrix	Gen. et sp. nov		Isasmendi et al.	Early Cretaceous (Barremian-Aptian)	Enciso Group	Spain	A spinosaurid theropod. The type species is R. lacustris.
Sidersaura	Gen. et sp. nov	Valid	Lerzo et al.	Late Cretaceous (Cenomanian-Turonian)	Huincul Formation	Argentina	A rebbachisaurid sauropod. The type species is S. marae.
Thyreosaurus	Gen. et sp. nov		Zafaty et al.	Middle Jurassic	El Mers Group	Morocco	A stegosaurian. The type species is T. atlasicus.
Titanomachya	Gen. et sp. nov		Pérez-Moreno et al.	Late Cretaceous (Campanian-Maastrichtian)	La Colonia Formation	Argentina	A titanosaur sauropod. The type species is T. gimenezi.
Tyrannosaurus mcraeensis	Sp. nov	Valid	Dalman et al.	Late Cretaceous (Campanian-Maastrichtian)	Hall Lake Formation	United States (New Mexico)	A tyrannosaurine; a species of Tyrannosaurus.
Udelartitan	Gen. et sp. nov	In press	Soto et al.	Late Cretaceous	Guichón Formation	Uruguay	A titanosaur sauropod belonging to the group Saltasauroidea. The type species is U. celeste.
Vectidromeus	Gen. et sp. nov	Valid	Longrich et al.	Early Cretaceous (Barremian)	Wessex Formation	United Kingdom	A hypsilophodontid. The type species is V. insularis. Announced in 2023; the final article version was published in 2024.
Yanbeilong	Gen. et sp. nov	Valid	Jia et al.	Early Cretaceous (Albian)	Zuoyun Formation	China	A stegosaurian. The type species is Y. ultimus.

General non-avian dinosaur research

• Evidence indicating that the evolution of rostral keratin cover was associated with partial tooth reduction throughout the evolutionary history of dinosaurs, but does not explain the complete loss of teeth in dinosaur lineages, is presented by Aguilar-Pedrayes, Gardner & Organ (2024).
• A study on the evolutionary rates of biting mechanics in herbivorous dinosaurs is published by Kunz and Sakamoto (2024), who interpret their findings as indicating that biomechanic evolution rates can reveal ecological signatures in different lineages and ontogenetic stages.
• Putative bone fragments of large-bodied dinosaurs from Rhaetian strata in France, Germany and United Kingdom are reinterpreted as fossil material of large-bodied ichthyosaurs by Perillo & Sander (2024).
• Romilio et al. (2024) describe dinosaur tracks from the Early Jurassic (Sinemurian) Razorback Beds (Australia), representing the oldest dinosaur tracks from the country to date.
• Troiano et al. (2024) report the discovery of an association of Early Cretaceous dinosaur tracks and petroglyphs from the Serrote do Letreiro Site (Brazil).
• Maidment (2024) describes the diversity of dinosaurs from the upper Morrison Formation (United States) in time and space, and finds evidence supporting cladogenesis as a means of increasing diplodocine diversity over time, as well as spatial segregation of Allosaurus and Camarasaurus species.
• Kirkland et al. (2024) describe the biodiversity of Cretaceous dinosaurs from Utah (United States).

Saurischian research

• A study on the femoral histology of amniotes from the Triassic Ischigualasto Formation (Argentina), including early dinosaurs Chromogisaurus novasi, Eodromaeus murphi, Eoraptor lunensis, Herrerasaurus ischigualastensis and Sanjuansaurus gordilloi, is published by Curry Rogers et al. (2024), who find that early dinosaurs known from this formation grew at least as quickly as sauropodomorph and theropod dinosaurs from the later Mesozoic, and that their elevated growth rates did not set them apart from other amniotes living at the same time.

Theropod research

• Mohabey et al. (2024) review and redescribe Laevisuchus indicus, Jubbulpuria tenuis and Compsosuchus solus, and describe a new noasaurid dentary from central India with procumbent dentition similar to the one present in Masiakasaurus.
• A study on the affinities of isolated theropod teeth from the Kem Kem Group (Morocco) is published by Hendrickx et al. (2024), who identify teeth of abelisaurids, spinosaurines, carcharodontosaurids and a non-abelisauroid ceratosaur or a megaraptoran.
• A probable ceratosaurid dentary is described from the Toarcian Cañadón Asfalto Formation (Argentina) by Pradelli, Pol & Ezcurra (2024), expanding known theropod diversity from this formation.
• A study on the affinities of isolated theropod teeth from the Bauru Basin (Brazil) is published by Delcourt et al. (2024), who argue that the geographical distribution of abelisaurids in South America was influenced by climatic conditions.
• A study in the bone histology of a mid-sized abelisaurid from the Upper Cretaceous Serra da Galga Formation (Brazil) is published by Aureliano et al. (2024), who report that, despite living in a semiarid tropical environment, the studied specimen had a growth rate similar to those of the Patagonian abelisaurids.
• A study on the skeletal pathologies affecting known specimens of brachyrostran abelisaurids is published by Baiano et al. (2024), who diagnose the fusion of two caudal vertebrae of the holotype specimen of Aucasaurus garridoi as congenital malformation and diagnose partial fusion of five caudal vertebrae of the holotype of Elemgasem nubilus as spondyloraptropathy, in both cases representing the first occurrences of the diagnosed pathologies among non-tetanuran theropods.
• Montealegre, Castillo-Visa & Sellés (2024) describe previously unpublished fossil material of theropods (cf. Protathlitis and a carcharodontosaurid which might be distinct from Concavenator) from the Barremian Arcillas de Morella Formation (Spain).
• Yun (2024) identifies convergent similarities in craniodental anatomy between spinosaurs and phytosaurs.
• Myhrvold et al. (2024) use statistical analyses to reconsider previous descriptions by Fabbri et al. (2022) of spinosaurs such as Spinosaurus as subaqueous foragers, and provide evidence that Spinosaurus was likely not an aquatic pursuit predator.
• Słowiak, Brusatte & Szczygielski (2024) reevaluate the fossil material attributed to Bagaraatan ostromi, interpreting the holotype as an indeterminate juvenile tyrannosaurid, and reporting that some of the fossils originally attributed to B. ostromi are actually caenagnathid bones.
• Longrich & Saitta (2024) review the taxonomic status of Nanotyrannus and argue that multiple lines of evidence support it as a distinct, small-bodied, possibly non-tyrannosaurid taxon, rather than an immature form of Tyrannosaurus.
• Description of the skeletal anatomy of Nothronychus graffami and N. mckinleyi, providing evidence of the presence of traits convergent with extant birds, ornithischian dinosaurs and titanosaur sauropods, is published by Smith & Gillette (2024).
• Park et al. (2024) propose that early pennaraptorans might have used their pennaceous feathers to flush hiding insects and to generate lift or drag during the pursuit of the flushed insects, and propose that such use of the pennaceous feathers might have contributed to the evolution of larger and stiffer feathers.
• A characterization of how number and shape of flight feathers correlate with locomotory style in extant birds is published by Kiat & O'Connor (2024). Extrapolating these patterns to Mesozoic pennaraptorans, the authors suggest that Caudipteryx and anchiornithines may have been secondarily flightless.
• A study on the evolution of the pectoral girdle of pennaraptorans is published by Wu et al. (2024), who report evidence of modifications changing the range of motion of the forelimb that preceded the origin of flight in paravians, as well as evidence of subsequent flight adaptive modifications in avialans.
• Meade et al. (2024) report evidence indicating that the ability of the skull to resist large mechanical stresses appeared early in oviraptorosaur evolution, before the appearance of the highly modified oviraptorid cranial architecture.
• The first caenagnathid fossil material from the upper Campanian De-na-zin Member of the Kirtland Formation (New Mexico, United States) is described by Funston, Williamson & Brusatte (2024).
• Description of the skeletal anatomy of Oksoko avarsan is published by Funston (2024).
• Gianechini, Colli & Makovicky (2024) present a reconstruction of the pelvic and hindlimb musculature of Buitreraptor gonzalezorum.
• Based on comparisons to extant birds, joint poses in the foot of Deinonychus during its walk cycle are reconstructed by Manafzadeh, Gatesy & Bhullar (2024).
• Description of the braincase and cranial endocast of Sinovenator changii, interpreted as morphologically intermediate between basal theropods and extant birds, is published by Yu et al. (2024).

Sauropodomorph research

• Evidence of variability of the pneumacity patterns of the cervical and dorsal vertebra in Plateosaurus is presented by Regalado Fernández (2024).
• "Gyposaurus" sinensis is interpreted as a probable junior synonym of Lufengosaurus huenei by Wang, Zhao & You (2024).
• Using Spinophorosaurus as an example, Vidal (2024) explains how virtual 3D models of sauropods have enabled an understanding of their biomechanics.
• Agustí, Alcalá & Santos-Cubedo (2024) propose that sauropod gigantism was an adaptation that increased the ability of sauropods to travel great distances, necessitated by pronounced seasonal changes.
• King et al. (2024) report evidence of a previously unknown form of pneumaticity in a rib of a member of the genus Apatosaurus, and propose that rib pneumaticity among apatosaurines is individually variable.
• Windholz et al. (2024) describe a new rebbachisaurid caudal vertebra from the Cenomanian Candeleros Formation (Argentina), providing new information on the caudal anatomy and pneumaticity in rebbachisaurids.
• Beeston et al. (2024) describe new sauropod material from the Winton Formation (Australia), and interpret Australotitan cooperensis as an indeterminate diamantinasaurian that is likely a junior synonym of Diamantinasaurus matildae.
• Filippi et al. (2024) study fossil material of sauropods from the Cerro Overo – La Invernada area (Bajo de la Carpa Formation; Neuquén Province, Argentina), interpreted as suggestive of the presence of a diverse fauna of titanosauriforms coexisting in the environment during the Santonian.
• An overview of the largest known sauropods from Argentina is published by Calvo (2024).

Ornithischian research

• A study on the taxonomic affinities of isolated ornithischian teeth from Bathonian microvertebrate sites in the United Kingdom, providing evidence of the presence of a previously unknown, diverse ornithischian fauna, is published by Wills, Underwood & Barrett (2024).

Thyreophoran research

• Satchell (2024) reidentified the proximal femur fragment (BELUM K3998) as an indeterminate dinosaur remain, not a potential specimen of Scelidosaurus or an ornithischian.
• The first stegosaurian fossil material from Gansu (China), assigned to Stegosaurus sp., is described from the Lower Cretaceous Hekou Group by Li et al. (2024).
• Cross and Arbour (2024) describe an ankylosaur femur from the Cenomanian Dunvegan Formation (British Columbia, Canada).

Cerapod research

• A review of Early Cretaceous Spanish styracosterns from the Maestrat Basin published by Santos-Cubedo (2024).
• Escanero-Aguilar et al. (2024) describe skull material of a hadrosauriform ornithopod from the Lower Cretaceous Castrillo de la Reina Formation (Spain), interpreted as more derived than Iguanodon but more basal than Proa, and expanding known diversity of ornithopods from the Cameros Basin.
• Nikolov, Dochev, & Brusatte (2024) test the ontogenetic age of small hadrosauroid bones from the Late Cretaceous (Maastrichtian) Kaylaka Formation (Bulgaria), and determine that the specimen likely belonged to a late juvenile or young subadult, rather than a dwarved adult, and suggest that large terrestrial animals were able to populate some European islands via a cyclically appearing or short-lived dispersal route.
• The first described hadrosaurid footprints from the Horseshoe Canyon Formation are described by Powers et al. (2024), who assign them to the ichnospecies Hadrosauropodus langstoni.
• Description of the morphology of the skull and endocranium of Psittacosaurus sibiricus, based on the study of both juvenile and adult specimens, is published by Podlesnov et al. (2024).
• A description endocranial anatomy of the Psittacosaurus lujiatunensis published by Sakagami et al. (2024).

Birds

New bird taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes	Images
Ardenna buchananbrowni	Sp. nov	Valid	Tennyson et al.	Pliocene (Waipipian)	Tangahoe Formation	New Zealand	A species of Ardenna.
Eocypselus geminus	Sp. nov	In press	Mayr & Kitchener	Eocene	London Clay	United Kingdom	A species of Eocypselus.
Eocypselus grandissimus	Sp. nov	In press	Mayr & Kitchener	Eocene	London Clay	United Kingdom	A species of Eocypselus.
Eocypselus paulomajor	Sp. nov	In press	Mayr & Kitchener	Eocene	London Clay	United Kingdom	A species of Eocypselus.
Imparavis	Gen. et sp. nov	In press	Wang et al.	Early Cretaceous	Jiufotang Formation	China	An enantiornithine. The type species is I. attenboroughi.
Pristineanis	Gen. et 2 sp. et comb. nov	Valid	Mayr & Kitchener	Eocene	London Clay	United Kingdom United States	A possible member of Piciformes. The type species is P. minor; genus also includes new species P. major, as well as "Neanis" kistneri Feduccia (1973).
Septencoracias simillimus	Sp. nov	Valid	Mayr & Kitchener	Eocene (Ypresian)	London Clay	United Kingdom	A member of Coraciiformes belonging or related to the family Coraciiformes.
Waltonirrisor	Gen. et sp. nov	Valid	Mayr & Kitchener	Eocene (Ypresian)	London Clay	United Kingdom	A member of Upupiformes. The type species is W. tendringensis.
Wunketru	Gen. et comb. nov	In press	De Mendoza, Degrange & Tambussi	Eocene	Las Flores Formation	Argentina	A member of Anseriformes of uncertain affinites; a new genus for "Telmabates" howardae.

Avian research

• A study performing quantitative functional imaging of the brain during rest and flight in rock doves with implications for the evolution of avian flight is published by Balanoff et al. (2024). They found increased neural activity in the cerebellum during flight, and through comparisons with cranial endocasts of extinct theropods, suggest that cerebellar expansion underlying such activity occurred at the base of Maniraptora, prior to the origin of avian flight.
• The Cretaceous fossil record of avialans from China is reviewed by Zhou & Wang (2024).
• A morphometric study of a large sample of specimens of Confuciusornis sanctus is published by Zhou et al. (2024), who interpret their findings as indicative of the presence of sexual dimorphism in this species.
• A study the relationship between the morphology of cervical vertebrae and dietary modes in extant and extinct birds is published by Liu et al. (2024), who report that Bohaiornis, Brevirostruavis and Longipteryx had cervical morphologies resembling those of extant insectivorous or raptorial birds, while Yanornis and Iteravis had cervical morphologies closer to those of extant generalist or herbivorous birds, falling into the ecological niches of aquatic or semiaquatic birds.
• A study on the limb bone histology and growth dynamics of Musivavis amabilis is published by Kundrát et al. (2024).
• A study on the antiquity of the crown group of birds is published by Brocklehurst & Field (2024), who argue that the crown group originated between 110.5 and 90.3 million years ago, and that the majority of higher-order diversification within the crown group either spanned or postdated the Cretaceous-Paleogene transition.
• The histochemistry of an ostrich eggshell from the Miocene Liushu Formation (China) is examined by Wu et al. (2024).
• Schroeter (2024) presents a characterization of diagenetiforms in a moa proteome.
• Fossil material of a possible member of Galloanserae is described from the Upper Cretaceous (Maastrichtian) Lance Formation (Wyoming, United States) by Brownstein (2024), who interprets this finding as supporting a cosmopolitan distribution of early crown birds.
• A study on the evolutionary history of neoavians, as indicated by genomic data, is published by Wu et al. (2024), who argue that the initial diversification of the crown group of birds was correlated with the rise of flowering plants in the Cretaceous, that modern birds survived the Cretaceous–Paleogene extinction event relatively well, and that the Paleocene–Eocene Thermal Maximum had a significant impact on the diversification of the seabirds.
• Zelenkov (2024) describes a fragmentary humerus of a buttonquail from the Lower Pleistocene strata from the Taurida Cave (Crimea), representing the first record of a member of the family Turnicidae from Eurasia from the Pliocene to Middle Pleistocene interval.
• A study on the long limb bone microstructure of extant king penguins throughout their ontogeny is published by Canoville, Robin & de Buffrénil (2024), who find evidence of substantial intraspecific variability regardless of the ontogenetic stage, and evidence indicating that limb bones of king penguins reach adult size early in the development while their microstructure continues to change until adulthood; on the basis of their findings the authors do not consider the conclusions of Cerda, Tambussi & Degrange (2014) and Ksepka et al. (2015) about the paleobiology of fossil penguins to be properly supported by their data.
• The evolutionary dynamics of microsatellites in Adélie penguins based on both modern and ancient genetic samples (up to 46.5 thousand years old) are studied by McComish et al. (2024).
• Leoni et al. (2024) describe the first fossil material of a turkey vulture from cave deposits in northeastern Brazil, which preserves trace marks likely produced by a felid and indicating that the vulture died in the cave it was discovered in.
• Acosta Hospitaleche & Jones (2024) describe fossil material of a large-bodied (with an estimated body mass of around 100 kg) phorusrhacid or phorusrhacid-like bird from the Eocene La Meseta Formation (Seymour Island, Antarctica), interpreted by the authors as likely apex predator of Antarctica during the Eocene.
• Acosta Hospitaleche & Jones (2024) describe partial tibiotarsus of a psilopterine phorusrhacid from the Eocene (Lutetian) Sarmiento Formation (Argentina), interpreted as belonging to a bird with an estimated body mass of approximately 5 kg.
• A carpometacarpus of a Cuban macaw is described from the Pleistocene of El Abrón Cave (Cuba) by Zelenkov (2024).

Pterosaurs

New pterosaur taxa

Name	Novelty	Status	Authors	Age	Type locality	Country	Notes	Images
Ceoptera	Gen. et sp. nov		Martin-Silverstone et al.	Middle Jurassic	Kilmaluag Formation	United Kingdom	A darwinopteran. The type species is C. evansae.

Pterosaur research

• A study on the cervical osteology of Anhanguera piscator, Azhdarcho lancicollis and Rhamphorhynchus muensteri, aiming to reconstruct the cervical arthrology of pterosaurs and the position of the pterosaur neck at rest, is published by Buchmann & Rodrigues (2024).
• Yun (2024) uses geometric morphometric analyses to investigate the relationships of pterosaur specimens from the Early Cretaceous Jinju and Hasandong formations (South Korea), and suggests that the material likely cannot be assigned to the Boreopteridae, as had previously been assumed.
• So, Kim & Won (2024) describe a nearly complete skeleton of a probable member of the genus Jeholopterus from the Lower Cretaceous Sinuiju Formation, representing the first pterosaur recond from North Korea reported to date.
• Ciaffi & Bellardini (2024) describe isolated teeth of indeterminate members of Ornithocheiriformes from the Lohan Cura Formation (Neuquén Province, Argentina), providing evidence of a more abundant and diversified ornithocheiriform fauna in the south of the Neuquén Basin (at least in the Albian) than previously known.

Other archosaurs

Other archosaur research

• Agnolín et al. (2024) revise the anatomy of the pelvic girdle of Lagerpeton chanarensis, reinterpreting it as likely to have a sprawling gait.

General research

• A study on the evolution of locomotion in archosauromorph reptiles is published by Shipley et al. (2024), who interpret their findings as indicative of greater range in limb form and locomotor modes of dinosaurs compared to other archosauromorph groups, and argue that the ability to adopt a wider variety of limb forms and modes might have given dinosaurs a competitive advantage over pseudosuchians.
• A study on the body size evolution of non-avian dinosaurs and Mesozoic birds is published by Wilson et al. (2024), who find no evidence that Bergmann's rule applied to the studied taxa.
• Knoll, Ishikawa & Kawabe (2024) present a new method which can be used to determine the brain volume of extinct archosaurs on the basis their endocranial cavity volume.