Academic literature on the topic 'Ornithischia'

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Journal articles on the topic "Ornithischia"

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Müller, Rodrigo Temp, and Maurício Silva Garcia. "A paraphyletic ‘Silesauridae' as an alternative hypothesis for the initial radiation of ornithischian dinosaurs." Biology Letters 16, no. 8 (2020): 20200417. http://dx.doi.org/10.1098/rsbl.2020.0417.

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Whereas ornithischian dinosaurs are well known from Jurassic and Cretaceous deposits, deciphering the origin and early evolution of the group remains one of the hardest challenges for palaeontologists. So far, there are no unequivocal records of ornithischians from Triassic beds. Here, we present an alternative evolutionary hypothesis that suggests consideration of traditional ‘silesaurids' as a group of low-diversity clades representing a stem group leading to core ornithischians (i.e. unambiguous ornithischians, such as Heterodontosaurus tucki ). This is particularly interesting because it f
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Weishampel, David B. "The evolution of ornithischian dinosaurs during the Cretaceous: jaws, plants, and evolutionary metrics revisited." Paleontological Society Special Publications 6 (1992): 308. http://dx.doi.org/10.1017/s2475262200008686.

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Coevolutionary links between plants and herbivores, often cited as examples of adaptive response of one group of organisms to another, have been much studied from both neontological and paleontological perspectives. The most commonly cited case of coevolution from the latter viewpoint is the radiation of grassland grasses and grazing mammals during the mid-Tertiary. Other promising examples are also beginning to emerge, among them the radiation of ornithischian dinosaurs and early angiosperms during the Cretaceous.Preliminary studies (Weishampel and Norman 1989) analyzed the temporal distribut
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Baron, Matthew G., David B. Norman, and Paul M. Barrett. "Postcranial anatomy of Lesothosaurus diagnosticus (Dinosauria: Ornithischia) from the Lower Jurassic of southern Africa: implications for basal ornithischian taxonomy and systematics." Zoological Journal of the Linnean Society 179, no. 1 (2016): 125–68. https://doi.org/10.1111/zoj.12434.

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Baron, Matthew G., Norman, David B., Barrett, Paul M. (2017): Postcranial anatomy of Lesothosaurus diagnosticus (Dinosauria: Ornithischia) from the Lower Jurassic of southern Africa: implications for basal ornithischian taxonomy and systematics. Zoological Journal of the Linnean Society 179 (1): 125-168, DOI: 10.1111/zoj.12434, URL: https://doi.org/10.1111/zoj.12434
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Baron, Matthew G., and Paul M. Barrett. "A dinosaur missing-link? Chilesaurus and the early evolution of ornithischian dinosaurs." Biology Letters 13, no. 8 (2017): 20170220. http://dx.doi.org/10.1098/rsbl.2017.0220.

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The enigmatic dinosaur taxon Chilesaurus diegosuarezi was originally described as a tetanuran theropod, but this species possesses a highly unusual combination of features that could provide evidence of alternative phylogenetic positions within the clade. In order to test the relationships of Chilesaurus , we added it to a new dataset of early dinosaurs and other dinosauromorphs. Our analyses recover Chilesaurus in a novel position, as the earliest diverging member of Ornithischia, rather than a tetanuran theropod. The basal position of Chilesaurus within the clade and its suite of anatomical
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Barrett, Paul M., Richard J. Butler, Roland Mundil, Torsten M. Scheyer, Randall B. Irmis, and Marcelo R. Sánchez-Villagra. "A palaeoequatorial ornithischian and new constraints on early dinosaur diversification." Proceedings of the Royal Society B: Biological Sciences 281, no. 1791 (2014): 20141147. http://dx.doi.org/10.1098/rspb.2014.1147.

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Current characterizations of early dinosaur evolution are incomplete: existing palaeobiological and phylogenetic scenarios are based on a fossil record dominated by saurischians and the implications of the early ornithischian record are often overlooked. Moreover, the timings of deep phylogenetic divergences within Dinosauria are poorly constrained owing to the absence of a rigorous chronostratigraphical framework for key Late Triassic–Early Jurassic localities. A new dinosaur from the earliest Jurassic of the Venezuelan Andes is the first basal ornithischian recovered from terrestrial deposit
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BARRETT, PAUL M., and FENG-LU HAN. "Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China." Zootaxa 2072, no. 1 (2009): 31–55. http://dx.doi.org/10.11646/zootaxa.2072.1.2.

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A detailed description of the skull and mandible of the Chinese cerapodan ornithischian dinosaur Jeholosaurus shangyuanensis (Lower Cretaceous, Yixian Formation) is presented for the first time and this information is used to reassess its phylogenetic position. Jeholosaurus can be distinguished from all other cerapodans on the basis of one autapomorphy (a row of small foramina on the nasal) and a character combination that is unique among ornithischians. Previously undescribed specimens add considerably to our knowledge of Jeholosaurus, providing new insights into its anatomy and ontogeny. Rev
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Barta, Daniel E., and Mark A. Norell. "The Osteology Of Haya Griva (Dinosauria: Ornithischia) From The Late Cretaceous Of Mongolia." Bulletin of the American Museum of Natural History 2021, no. 445 (2021): 1–113. https://doi.org/10.1206/0003-0090.445.1.1.

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Barta, Daniel E., Norell, Mark A. (2021): The Osteology Of Haya Griva (Dinosauria: Ornithischia) From The Late Cretaceous Of Mongolia. Bulletin of the American Museum of Natural History 2021 (445): 1-113, DOI: 10.1206/0003-0090.445.1.1, URL: https://bioone.org/journals/bulletin-of-the-american-museum-of-natural-history/volume-445/issue-1/0003-0090.445.1.1/The-Osteology-of-Haya-griva-Dinosauria--Ornithischia-from-the/10.1206/0003-0090.445.1.1.full
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Barrett, Paul M., Richard J. Butler, and Sterling J. Nesbitt. "The roles of herbivory and omnivory in early dinosaur evolution." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 101, no. 3-4 (2010): 383–96. http://dx.doi.org/10.1017/s1755691011020111.

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ABSTRACTHerbivorous and omnivorous dinosaurs were rare during the Carnian stage of the Late Triassic. By contrast, the succeeding Norian stage witnessed the rapid diversification of sauropodomorphs and the rise of the clade to ecological dominance. Ornithischians, by contrast, remained relatively rare components of dinosaur assemblages until much later in the Mesozoic. The causes underlying the differential success of ornithischians and sauropodomorphs remain unclear, but might be related to trophic specialisation. Sauropodomorphs replaced an established herbivore guild consisting of rhynchosa
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Giffin, Emily B. "Notes on pachycephalosaurs (Ornithischia)." Journal of Paleontology 63, no. 4 (1989): 525–29. http://dx.doi.org/10.1017/s0022336000019739.

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Previously undescribed specimens of Pachycephalosaurus wyomingensis allow partial description of the anterior braincase and a preliminary examination of change of dome shape with age. The two morphs of dome shape recognized in adults are also present in juvenile specimens with dome lengths half that of mature adults. A new specimen of Stegoceras edmontonense in the same geographic and stratigraphic provenance as P. wyomingensis establishes that the two pachycephalosaur genera could exist sympatrically.
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Giffin, Emily B. "Pachycephalosaur paleoneurology (Archosauria: Ornithischia)." Journal of Vertebrate Paleontology 9, no. 1 (1989): 67–77. http://dx.doi.org/10.1080/02724634.1989.10011739.

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Dissertations / Theses on the topic "Ornithischia"

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Spencer, Marc Richard. "A Phylogenetic Analysis of the Basal Ornithischia (Reptilia, Dinosauria)." Bowling Green State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1185914798.

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Maidment, Susannah Catherine Rose. "Systematics and phylogeny of Stegosauria (Dinosauria: Ornithischia)." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613251.

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Parish, Jolyon C. "The evolution and palaeobiology of the armoured dinosaurs (Ornithischia: Ankylosauria)." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419324.

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Spencer, Marc Richard. "Phylogenetic and Biogeographic Assessment of Ornithischian Diversity Throughout the Mesozoic: A Species-Level Analysis from Origin to Extinction." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/4915.

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Ornithischian dinosaurs form a diverse, globally-distributed clade including the dominant large land herbivores in many Mesozoic faunas. However, because we lack a well-resolved species-level phylogeny including basal and derived members, our understanding of the initial ornithischian radiation in the Late Triassic is unclear, which further complicates our ability to test biogeographic scenarios. A new species-level phylogenetic analysis, based on comprehensive empirical assessments of a wide sample of ornithischians with an emphasis
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Knoll, Fabien. "Les Fabrosauridae Galton, 1972 (Dinosauria : Ornithischia) : répartition géographique et stratigraphique ; systématique et phylogénie." Paris, Muséum national d'histoire naturelle, 2002. http://www.theses.fr/2002MNHN0012.

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L'holotype de Fabrosaurus australis (Hettangien, Lesotho), MNHN LES 9, ne permet pas de donner une diagnose discriminante au niveau spécifique. Fabrosaurus australis est donc considéré comme un nomen dubium, MNHN LES 9 étant rapporté, sans certitude, à un Ornithischia indet. Lesothosaurus diagnosticus (Hettangien, Lesotho et Afrique du sud) est le premier taxon nominal applicable ayant été classé dans les FABROSAURIDAE sans qu'il soit possible, en toute rigueur, de le ranger dans une famille nommée antérieurement. Dans ces conditions, le taxon nominal FABROSAURIDAE Galton, 1972 échoit légitime
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Lauters, Pascaline. "Structure générale et évolution du cerveau chez les dinosaures ornithischiens." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209390.

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Parmi les dinosaures, le clade des Ornithopodes est l’un de ceux qui a rencontré le plus de succès. Apparus au Jurassique supérieur, le groupe s’est dispersé et diversifié jusqu’à sa disparition à la fin du Crétacé. Je me suis attachée à étudier le cerveau des Ornithopodes d’Europe et d’Asie, à établir des comparaisons avec les autres archosaures et de nouveaux arbres phylogénétiques incluant des caractères issus de l’endocrâne. Pour ce faire, des moulages et des reconstitutions à partir de données CT-scan ont été réalisées pour étudier la cavité endocrânienne de divers membres de ce groupe. J
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Chabli, Souad. "Etude anatomique et systematique de gravisaurus tenerensis n. G. N. Sp. Dinosaurien, ornithischien) du gisement de gadoufaoua (aptien du niger)." Paris 7, 1988. http://www.theses.fr/1988PA077030.

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Description d'un nouveau genre et d'une nouvelle espece d'iguanodontide en provenance du gisement de gadoufaoua. L'etude osteologique et biometrique, l'analyse et la reconstitution de la musculature pelvienne indiquent qu'il s'agit du premier ornithopode quadrupede franc actuellement connu. On precise sa phylogenie. On le compare avec les autres ornithopodes. L'interpretation des rapports biometriques concernant le squelette appendiculaire, bien que delicate, permet de differencier certains groupes. On analyse la position systematique du nouveau taxon ce qui nous amene a declarer lesothosaurus
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Baron, Matthew Grant. "The origin and early evolution of the Dinosauria." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/271890.

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For 130 years dinosaurs have been divided into two distinct clades – Ornithischia and Saurischia. This dissertation looks at the earliest evolution of the clade Dinosauria by focusing upon the interrelationships of the major subsidiary clades within it. It does this following examination, comparison and description of early dinosaur material, and by utilising modern phylogenetic analysis techniques, to rigorously and objectively test the fundamental groupings within the clade Dinosauria using a newly compiled dataset of early dinosaurs and other dinosauromorphs (= close dinosaur relatives). Th
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Williams, Vincent Stanley. "Tooth microwear, diet and feeding in ornithischian dinosaurs." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/10308.

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Understanding the feeding mechanisms and diet of ornithopod dinosaurs is fundamental to understanding their role in Late Cretaceous ecosystems. Current hypotheses of feeding behaviour are based on functional morphology, and testing these is problematic. Microscopic scratches, microwear, that form on teeth in vivo during feeding are known to record the relative movement of the tooth rows and to capture evidence of tooth-food interactions; however, their applicability to ornithischian dinosaurs has not been tested. The development of a fast non-abrasive and residue free method for the removal of
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Butler, R. J. "The phylogeny and early evolution of the ornithischian dinosaurs." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597179.

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The Elliot Formation of South Africa and Lesotho contains one of the most important but relatively understudied, early ornithischian faunas; here a review is presented of its known ‘fabrosaurid’ (non-heterodontosaurid) specimens. The first ornithischian collected from the Lower Elliot Formation (Late Triassic) is described, representing a new taxon of basal ornithischian. Within the Upper Elliot Formation (Early Jurassic), ‘<i>Fabrosaurus australis’</i> is considered a <i>nomen dubium, </i>a new diagnosis of <i>Lesothosaurus diagnosticus</i> is presented, and a new taxon, <i>Stormbergia danger
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Books on the topic "Ornithischia"

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Lessem, Don. Dinosaurios acorazados. Ediciones Lerner, 2006.

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Dzik, Jerzy. Pierwszy polski dinozaur - Krasiejów: Silesaurus opolensis. "Adan", 2004.

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Dixon, Dougal. Diceratops and other horned dinosaurs. Picture Window Books, 2008.

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Johnson, Jinny. Triceratops and other horned and armored dinosaurs. Smart Apple Media, 2007.

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Per, Christiansen. Armored & spiked dinosaurs. Gareth Stevens Pub., 2009.

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Dixon, Dougal. Tsintaosaurus and other duck-billed dinosaurs. Picture Window Books, 2008.

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Zimmerman, Howard. Armored and Dangerous. Bearport Publishing Company, Inc., 2008.

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Zimmerman, Howard. Armored and dangerous. Bearport Pub. Company, 2009.

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Mica, Polock, ed. Everyday antiracism: Getting real about race in school. New Press, 2008.

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Horner, John R. Cranial morphology of Prosaurolophus (Ornithischia: Hadrosauridae): With descriptions of two new Hadrosaurid species and an evaluation of Hadrosaurid phylogenetic relationships. Museum of the Rockies, Montana State University, 1992.

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Book chapters on the topic "Ornithischia"

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Nabavizadeh, Ali. "Ornithischia." In Encyclopedia of Animal Cognition and Behavior. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_1174.

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Nabavizadeh, Ali. "Ornithischia." In Encyclopedia of Animal Cognition and Behavior. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-47829-6_1174-1.

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Prothero, Donald R. "Ornithischians I." In Vertebrate Evolution. CRC Press, 2022. http://dx.doi.org/10.1201/9781003128205-15.

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Prothero, Donald R. "Ornithischians II." In Vertebrate Evolution. CRC Press, 2022. http://dx.doi.org/10.1201/9781003128205-16.

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Prasad, Guntupalli V. R., and Varun Parmar. "First Ornithischian and Theropod Dinosaur Teeth from the Middle Jurassic Kota Formation of India: Paleobiogeographic Relationships." In Biological Consequences of Plate Tectonics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49753-8_1.

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Weishampel, David B. "Ornithischia." In The Dinosauria. University of California Press, 2004. http://dx.doi.org/10.1525/california/9780520242098.003.0016.

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"ORNITHISCHIA." In The Dinosauria, Second Edition. University of California Press, 2019. http://dx.doi.org/10.1525/9780520941434-019.

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Norman, David B., Lawrence M. Witmer, and David B. Weishampel. "Basal Ornithischia." In The Dinosauria. University of California Press, 2004. http://dx.doi.org/10.1525/california/9780520242098.003.0017.

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"14. Basal Ornithischia." In The Dinosauria, Second Edition. University of California Press, 2019. http://dx.doi.org/10.1525/9780520941434-020.

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Kemp, T. S. "2. History of reptiles." In Reptiles: A Very Short Introduction. Oxford University Press, 2019. http://dx.doi.org/10.1093/actrade/9780198806417.003.0002.

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‘History of reptiles’ describes the origin and early evolution of reptiles, from the early ancestor-like Hylonomus and Petrolacosaurus 320 million years ago (mya) in the Carboniferous period. The end-Permian mass extinction, 250 mya, removed over 90 per cent of the world’s species of animals and plants, but one group—the archosaurs—began to expand and diversify. The archosaurs included the dinosaurs, made up of the Theropoda, the Sauropodomorphs, the Ornithischia, the pterosaurs, and the crocodiles. In the Mesozoic Era, several new kinds of reptiles evolved adaptations for life in the sea—ples
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Conference papers on the topic "Ornithischia"

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Hudgins, Michael, Phillip J. Currie, and Corwin Sullivan. "QUALITATIVE AND QUANTITATIVE ASSESSMENT OF DENTAL DIFFERENCES BETWEEN STEGOCERAS VALIDUM (ORNITHISCHIA: PACHYCEPHALOSAURIDAE) AND THESCELOSAURUS NEGLECTUS (ORNITHISCHIA: THESCELOSAURIDAE) WITH IMPLICATIONS FOR PALEOECOLOGY AND IDENTIFICATION OF TEETH FROM MICROSITES." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-356848.

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Pedigo, Richardson M., D. Cary Woodruff, Emily S. Stafford, Eleanor Harris, and Cheryl Waters-Tormey. "CAN PACHYCEPHALOSAUR (DINOSAURIA: ORNITHISCHIA) CRANIAL MORPHOLOGY BE QUANTIFIED BY ESTIMATING FRACTAL DIMENSION?" In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-358669.

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Inabinett, Matthew. "POSTCRANIAL ANATOMY OF A NEW, WELL-PRESERVED SPECIMEN OF THE DINOSAUR DRYOSAURUS ALTUS (ORNITHISCHIA, DRYOSAURIDAE) FROM ALBANY COUNTY, WYOMING." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-311037.

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Brennan, Jennifer, Julia E. Alfano, David C. Evans, Phillip J. Currie, and Catherine A. Forster. "CRANIAL REDESCRIPTION OF STEGOCERAS VALIDUM GIVES FIRST LOOK INTO SKULL MORPHOLOGY IN PACHYCEPHALOSAURIA (DINOSAURIA: ORNITHISCHIA) INFORMED BY X-RAY COMPUTED TOMOGRAPHY." In GSA Connects 2024 Meeting in Anaheim, California. Geological Society of America, 2024. http://dx.doi.org/10.1130/abs/2024am-405341.

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Olsen, Paul E., Bennett B. Slibeck, and Hans-Dieter Sues. "THE DINOSAUR THAT CAME IN FROM THE COLD: THE OLDEST DEFINITIVE ORNITHISCHIAN DINOSAURS AND ORIGIN OF THEIR ABRUPT APPEARANCE." In Joint 72nd Annual Southeastern/ 58th Annual Northeastern Section Meeting - 2023. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023se-385820.

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