Kellner, A. W. A.; Figueiredo, R. G.; Calvo, J. O. (2023). "A new species of Comahuesuchus Bonaparte, 1991 (Crocodyliformes: Notosuchia) from the Upper Cretaceous of Neuquén, Lake Barreales, Patagonia, Argentina". Anais da Academia Brasileira de Ciências. 95 (Suppl. 1). e20230179. doi: 10.1590/0001-3765202320230179. PMID 37585972. S2CID 260910113. New specimen of Diamantinasaurus matildae, including the skull preserving cranial elements not previously known for this taxon and showing similarities with the skull of Sarmientosaurus musacchioi, is described from the Upper Cretaceous Winton Formation ( Australia) by Poropat et al. (2023). [169] Pellets and a fragmentary beak of a barn owl from the Holocene of Socotra Island ( Yemen) are reported by Ramello et al. (2023). [278] Wilberg, E. W.; Godoy, P. L.; Griffiths, E. F.; Turner, A. H.; Benson, R. B. J. (2023). "A new early diverging thalattosuchian (Crocodylomorpha) from the Early Jurassic (Pliensbachian) of Dorset, U.K. and implications for the origin and evolution of the group". Journal of Vertebrate Paleontology. 42 (3). e2161909. doi: 10.1080/02724634.2022.2161909. S2CID 256149424. Evidence from taphonomic experiments, interpreted as indicating that putative keratins reported from fossil feathers are most likely artefacts of fossilization, but also indicating that corneous β-proteins of feathers can persist through deep time, is presented by Slater et al. (2023). [324]

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A study on the bone histology of Fasolasuchus tenax and Prestosuchus chiniquensis, providing evidence of slower growth rate in the latter taxon, is published by Ponce et al. (2023). [13] Dhiman et al. (2023) report the discovery of 92 titanosaur egg clutches from the Upper Cretaceous Lameta Formation ( Madhya Pradesh, India), including three types of clutches and assigned to six oospecies, interpret their findings as suggestive of higher diversity of titanosaur taxa from the Lameta Formation than indicated by body fossils, and evaluate the implications of the studied egg clutches for the knowledge of the reproductive biology of titanosaurs. [171] An owl. The type species is Y. michaeldanielsi; genus also includes " Eostrix" gulottai Mayr (2016). Announced in 2022; the final article version was published in 2023. Smith & Gillette (2023) reconstruct soft tissues of the hindlimbs and likely posture of Nothronychus graffami. [134]

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Many of our calendar designs have been recreated throughout the years because our community loves the styles so much! Along with the fan-favorite calendars, you will find new designs too! Evidence indicative of Valanginian maximum age for the Urho Pterosaur Fauna from the Tugulu Group in Junggar Basin (Xinjiang, China) is presented by Zheng et al. (2023). [320] A study aiming to determine the diets of members of the family Bohaiornithidae is published by Miller et al. (2023), who interpret their findings as indicating that the family included taxa adapted to diverse diets, and predict the ancestral member of Enantiornithes to have been a generalist which ate a wide variety of foods. [248]

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A study on the developmental strategies underlying the evolution of body size of non-avialan theropods is published by D'Emic et al. (2023), who report that changes in the rate and duration of growth contributed nearly equally to the body size changes. [88] Review of the diversity, relationships, biogeography and paleoecology of rhabdodontids is published by Augustin, Ősi & Csiki-Sava (2023). [190] Four teeth representing the first pterosaur material from Ukraine reported to date are described from the Lower Cretaceous Burim Formation by Sokolskyi (2023). [308] Tumanova et al. (2023) describe anomalies within the airway and sinuses of a skull of a specimen of Tarchia, which were only detected while CT scanning the specimen, and which might have been caused by infection and/or trauma. [188] This is such a popular calendar, especially amongst children. Many of our readers use this peeking animal 2023 calendar for their children’s bedrooms or nurseries!Averianov & Lopatin (2023) describe fossil material (metatarsals) of a caenagnathid with similaries to Elmisaurus rarus and a dromaeosaurid with similarities to Velociraptor mongoliensis from the Upper Cretaceous Bostobe Formation ( Kazakhstan). [137] Voris, Zelenitsky& Therrien (2023) describe new caenagnathid fossil material from the upper Maastrichtian portion of the Scollard Formation ( Alberta, Canada), including fossils indicative of the presence of a large-bodied taxon similar to Anzu wyliei or Caenagnathus collinsi. [138] A rebbachisaurid vertebra from the La Amarga Formation ( Argentina) is redescribed by Lerzo (2023), who finds it to be a derived member of Rebbachisaurinae. [161] A member of the family Rauisuchidae. The type species is S. basileus. Published online in 2023, but the issue date is listed as December 2022. [8] A study on the diversification of pterosaurs during their evolutionary history, aiming to determine the factors that affected pterosaur evolution, is published by Yu, Zhang & Xu (2023). [289]