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Hayashi, S., Carpenter K., Watabe M., Mateus O., & Barsbold R. (2008).  Defensive weapons of thyreophoran dinosaurs: histological comparisons and structural differences in spikes and clubs of ankylosaurs and stegosaurs. 28 (3, Supplement), 89A-90A. Journal of Vertebrate Paleontology. 28, 89–90., Number Suppl. to Abstract
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Hayashi, S., Carpenter K., Watabe M., Mateus O., & Barsbold R. (2008).  Defensive weapons of thyreophoran dinosaurs: histological comparisons and structural differences in spikes and clubs of ankylosaurs and stegosaurs. Journal of Vertebrate Paleontology. 28(3, Supplement), 89A-90A., Number Suppl. to 3 Abstracthayashi_et_al_2008_histology_stegosaurs_defensive_weapons_of_thyreophoran_dinosaurs-_histological_comparisons_and_structural_differences_in_spikes_and_clubs_of_ankylosaurs_and_stegosaurs.pdfWebsite

Thyreophoran dinosaurs have spike- and club-shaped osteoderms probably used for defensive weapons. The structural and histological variations have been little known. Here, we provide the comparisons of the internal structures in defensive weapons of ankylosaurs and stegosaurs, using spikes of a polacanthid (Gastonia) and a nodosaurid (Edmontonia), clubs of ankylosaurids (Saichania and Ankylosauridae indet. from Canada), and spikes of stegosaurids (Stegosaurus and Dacentrurus), which sheds light on understandings of evolutionary history and functional implications of defensive weapons in thyreophorans. In ankylosaurs, the structural and histological features of spikes and clubs are similar with those of small osteoderms in having thin compact bones, thick cancellous bones with large vascular canals, and abundant collagen fibers. A previous study demonstrated that each of three groups of ankylosaurs (polacanthid, nodosaurid, and ankylosaurid) has distinct characteristic arrangements of collagen fibers in small osteoderms. This study shows that spikes and clubs of ankylosaurs maintain the same characteristic features for each group despite of the differences in shapes and sizes. Conversely, the spike-shaped osteoderms in primitive (Dacentrurus) and derived (Stegosaurus) stegosaurids have similar structure to each other and are significantly different from the other types of stegosaur osteoderms (throat bony ossicles and plates) in having thick compact bones with a medullary cavity. These lack abundant collagen fibers unlike ankylosaur osteoderms. The spikes of ankylosaurs and stegosaurs are similar in shape, but their structural and histological features are different in having unique structures of collagen fibers for ankylosaurs and thick compact bones for stegosaurs, providing enough strength to have large spikes and to use them as defensive weapons. Although the shapes of ankylosaur clubs are different from spikes, the internal structures are similar, suggesting that ankylosaurs maintain similar structures despite of different shapes in osteoderms. These results indicate that ankylosaurs and stegosaurs used different strategies independently to evolve defensive weapons.

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Marzola, M., Mateus O., Shubin N. H., & Clemmensen L. B. (2017).  Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland). Journal of Vertebrate Paleontology. e1303501., 2017: Taylor & Francis Abstractmarzola_et_al_2017_cyclotosaurus_greenland.pdfWebsite

ABSTRACTCyclotosaurus naraserluki, sp. nov., is a new Late Triassic capitosaurid amphibian from lacustrine deposits in the Fleming Fjord Formation of the Jameson Land Basin in Greenland. It is based on a fairly complete and well-preserved skull associated with two vertebral intercentra. Previously reported as Cyclotosaurus cf. posthumus, C. naraserluki is unique among cyclotosaurs for having the postorbitals embaying the supratemporals posteromedially. The anterior palatal vacuity presents an autapomorphic complete subdivision by a wide medial premaxillary-vomerine bony connection. The parasphenoid projects between the pterygoids and the exoccipitals, preventing a suture between the two, a primitive condition shared with Rhinesuchidae, Eryosuchus, and Kupferzellia. Within Cyclotosaurus, the Greenlandic skull has a distinctive combination of circular choanae (shared with C. ebrachensis, C. posthumus, and C. robustus) and a convex posteromedial margin of the tabulars (also present in C. ebrachensis and C. intermedius). A phylogenetic analysis indicates that C. naraserluki is the sister taxon of the middle Norian C. mordax from southern Germany, with which it shares a pair of premaxillary foramina. Cyclotosaurus is one of the most successful and diverse genera of Late Triassic temnospondyls, with at least eight species reported from middle Carnian to late Norian. Cyclotosaurus naraserluki is the largest amphibian ever reported from Greenland and one of the Late Triassic vertebrates with the highest northern paleolatitude currently known.http://zoobank.org/urn:lsid:zoobank.org:pub:43AAA541-031C-4EE1-B819-4846EBBD1BBBSUPPLEMENTAL DATA?Supplemental materials are available for this article for free at www.tandfonline.com/UJVPCitation for this article: Marzola, M., O. Mateus, N. H. Shubin, and L. B. Clemmensen. 2017. Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland). Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1303501.ABSTRACTCyclotosaurus naraserluki, sp. nov., is a new Late Triassic capitosaurid amphibian from lacustrine deposits in the Fleming Fjord Formation of the Jameson Land Basin in Greenland. It is based on a fairly complete and well-preserved skull associated with two vertebral intercentra. Previously reported as Cyclotosaurus cf. posthumus, C. naraserluki is unique among cyclotosaurs for having the postorbitals embaying the supratemporals posteromedially. The anterior palatal vacuity presents an autapomorphic complete subdivision by a wide medial premaxillary-vomerine bony connection. The parasphenoid projects between the pterygoids and the exoccipitals, preventing a suture between the two, a primitive condition shared with Rhinesuchidae, Eryosuchus, and Kupferzellia. Within Cyclotosaurus, the Greenlandic skull has a distinctive combination of circular choanae (shared with C. ebrachensis, C. posthumus, and C. robustus) and a convex posteromedial margin of the tabulars (also present in C. ebrachensis and C. intermedius). A phylogenetic analysis indicates that C. naraserluki is the sister taxon of the middle Norian C. mordax from southern Germany, with which it shares a pair of premaxillary foramina. Cyclotosaurus is one of the most successful and diverse genera of Late Triassic temnospondyls, with at least eight species reported from middle Carnian to late Norian. Cyclotosaurus naraserluki is the largest amphibian ever reported from Greenland and one of the Late Triassic vertebrates with the highest northern paleolatitude currently known.http://zoobank.org/urn:lsid:zoobank.org:pub:43AAA541-031C-4EE1-B819-4846EBBD1BBBSUPPLEMENTAL DATA?Supplemental materials are available for this article for free at www.tandfonline.com/UJVPCitation for this article: Marzola, M., O. Mateus, N. H. Shubin, and L. B. Clemmensen. 2017. Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland). Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1303501.

Marzola, M., Mateus O., Shubin N. H., & Clemmensen L. B. (2017).  Cyclotosaurus naraserluki, sp. nov., a new Late Triassic cyclotosaurid (Amphibia, Temnospondyli) from the Fleming Fjord Formation of the Jameson Land Basin (East Greenland). Journal of Vertebrate Paleontology. e1303501., may: Informa {UK} Limited AbstractWebsite
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Azanza, M. M., Coimbra R., Puértolas-Pascual E., Russo J., Bauluz B., & Mateus O. (2019).  Crystallography of Lourinhanosaurus eggshells (Dinosauria, Theropoda, Allosauroidea). Journal of Vertebrate Paleontology, Program and Abstracts. 156-157.moreno_azanza_et_al_2019_svp_abstract.pdf
Azanza, M. M., Coimbra R., Puértolas-Pascual E., Russo J., Bauluz B., & Mateus O. (2019).  Crystallography of Lourinhanosaurus eggshells (Dinosauria, Theropoda, Allosauroidea). Journal of Vertebrate Paleontology, Program and Abstracts. 156-157. Abstract
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Hansen, B. B., Milàn J., Clemmensen L. B., Adolfssen J. S., Estrup E. J., Klein N., Mateus O., & Wings O. (2016).  Coprolites from the Late Triassic Kap Stewart Formation, Jameson Land, East Greenland: morphology, classification and prey inclusions. Geological Society, London, Special Publications. 434(1), 49-69. Abstracthansen_et_al_2015_coprolites_from_the_late_triassic_kap_stewart_formation_jameson_land_east_greenland.pdfWebsite

A large collection of vertebrate coprolites from black lacustrine shales in the Late Triassic (Rhaetian–Sinemurian) Kap Stewart Formation, East Greenland is examined with regard to internal and external morphology, prey inclusions, and possible relationships to the contemporary vertebrate fauna. A number of the coprolites were mineralogically examined by X-ray diffraction (XRD), showing the primary mineral composition to be apatite, clay minerals, carbonates and, occasionally, quartz in the form of secondary mineral grains. The coprolite assemblage shows multiple sizes and morphotypes of coprolites, and different types of prey inclusions, demonstrating that the coprolite assemblage originates from a variety of different producers.Supplementary material: A description of the size, shape, structure, texture, contents and preservation of the 328 specimens is available at https://doi.org/10.6084/m9.figshare.c.2134335

Hansen, B. B., Milàn J., Clemmensen L. B., Adolfssen J. S., Estrup E. J., Klein N., Mateus O., & Wings O. (2015).  Coprolites from the Late Triassic Kap Stewart Formation, Jameson Land, East Greenland: morphology, classification and prey inclusions. Geological Society, London, Special Publications. 434, AbstractWebsite

A large collection of vertebrate coprolites from black lacustrine shales in the Late Triassic (Rhaetian–Sinemurian) Kap Stewart Formation, East Greenland is examined with regard to internal and external morphology, prey inclusions, and possible relationships to the contemporary vertebrate fauna. A number of the coprolites were mineralogically examined by X-ray diffraction (XRD), showing the primary mineral composition to be apatite, clay minerals, carbonates and, occasionally, quartz in the form of secondary mineral grains. The coprolite assemblage shows multiple sizes and morphotypes of coprolites, and different types of prey inclusions, demonstrating that the coprolite assemblage originates from a variety of different producers.Supplementary material: A description of the size, shape, structure, texture, contents and preservation of the 328 specimens is available at https://doi.org/10.6084/m9.figshare.c.2134335

Moreno-Azanza, M., Bauluz B., Canudo J. I., & Mateus O. (2017).  The conservative structure of the ornithopod eggshell: electron backscatter diffraction characterization of Guegoolithus turolensis from the Early Cretaceous of Spain. Journal of Iberian Geology. 1-9., 2017 Abstractthe_conservative_structure_of_the_ornithopod_eggshell.pdfWebsite

The Spheroolithidae oospecies Guegoolithus turolensis, putatively attributed to non-hadrosauroid styracosterns was first described in the Barremian of the Iberian Basin, and later reported in the Valanginian–Hauterivian of the Cameros Basin, with both occurrences separated by a few hundred kilometres but by over 10 million years.

Moreno-Azanza, M., Bauluz B., Canudo J. I., & Mateus O. (2017).  The conservative structure of the ornithopod eggshell: electron backscatter diffraction characterization of Guegoolithus turolensis from the Early Cretaceous of Spain. Journal of Iberian Geology. 43, 235–243., jun, Number 2: Springer Nature AbstractWebsite
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Brandao, J. M., Callapez P. M., Mateus O., & Castro P. (2010).  Colecções e museus de Geologia: missão e gestão. , Jan: Ed. Universidade de Coimbra e Centro de Estudos e Filosofia da História da Ciência. Abstract

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Agnolin, F. L., Mateus O., Milàn J., Marzola M., Wings O., Adolfssen J. S., & Clemmensen L. B. (2018).  Ceratodus tunuensis, sp. nov., a new lungfish (Sarcopterygii, Dipnoi) from the Upper Triassic of central East Greenland. Journal of Vertebrate PaleontologyJournal of Vertebrate Paleontology. e1439834., 2018: Taylor & Francis Abstractagnolin_et_al_2018_ceratodus_tunuensis_greenland.pdfWebsite

ABSTRACTThe fossil record of post-Paleozoic lungfishes in Greenland is currently restricted to a few brief reports of isolated and undetermined tooth plates coming from the uppermost Fleming Fjord Formation (late Norian) in Jameson Land, central East Greenland. Here, we describe Ceratodus tunuensis, sp. nov., a new dipnoan from a thin bed of calcareous lake mudstone from the ?rsted Dal Member of the Fleming Fjord Formation. The Ceratodus fossil record indicates that during the Late Triassic, this genus was restricted to the middle latitudes of the Northern Hemisphere. This record matches previous paleobiogeographical analyses and indicates that terrestrial biota during the Late Triassic was strongly influenced by paleolatitude.Citation for this article: Agnolin, F. L., O. Mateus, J. Milàn, M. Marzola, O. Wings, J. Schulz Adolfssen, and L. B. Clemmensen. 2018. Ceratodus tunuensis, sp. nov., a new lungfish (Sarcopterygii, Dipnoi) from the Upper Triassic of central East Greenland. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2018.1439834.

Agnolin, F. L., Mateus O., Milàn J., Marzola M., Wings O., Adolfssen J. S., & Clemmensen L. B. (2018).  Ceratodus tunuensis, sp. nov., a new lungfish (Sarcopterygii, Dipnoi) from the Upper Triassic of central East Greenland. Journal of Vertebrate Paleontology. e1439834., apr: Informa {UK} Limited AbstractWebsite
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Moreno-Azanza, M., Pérez-Pueyo M., Puértolas-Pascual E., Núñez-Lahuerta C., Mateus O., Bauluz B., Bádenas B., & Canudo J. I. (2022).  Cáscaras de huevo de los últimos cocodrilomorfos del Cretácico (Huesca, España). XXXVII Jornadas de Paleontología SEP - V Congreso Ibérico de Paleontología. p. 119. Abstract2022_moreno-azanza_etal_sep.pdf

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Saleiro, A., Guillaume A. R. D., Rotatori F. M., Ríos-Ibañez M., López E. D., Conti S., Martino R., Puértolas-Pascual E., Mateus O., & Moreno-Azanza M. (2022).  A beta taxonomy approach to Late Jurassic and Early Cretaceous dinosaur assemblages. Abstract book of the XIX Annual Conference of the European Association of Vertebrate Palaeontologists, Benevento/Pietraroja, Italy, 27th June-2 nd July 2022.. 176-177.: PalaeoVertebrata, Special Volume 1- 2022, 224. Doi: 10.18563/pv.eavp2022 Abstractsaleiroetal_2022-eavp.pdf

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Rotatori, F. M., Camilo B., Bertozzo F., Mateus O., & Moreno-Azanza M. (2022).  A basal ankylopollexian dinosaur from the Late Jurassic of Portugal and its implications for iguanodontian diversity. Abstract book of the XIX Annual Conference of the European Association of Vertebrate Palaeontologists, Benevento/Pietraroja, Italy, 27th June-2nd July 2022. 170-171.: PalaeoVertebrata, Special Volume 1- 2022, 224. Doi: 10.18563/pv.eavp Abstractrotatorietal_2022.pdf

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Kullberg, J. C., Rocha R. B., Soares A. F., Rey J., Terrinha P., Azerêdo A. C., Callapez P., Duarte, L.V., Kullberg M. C., Martins L., Miranda J. R., Alves C., Mata J., Madeira J., Mateus O., Moreira M., & Nogueira C. R. (2013).  A Bacia Lusitaniana: Estratigrafia, Paleogeografia e Tectónica. (Dias, R. Araújo, A, Terrinha, P. and Kullberg, J. C., Ed.).Geologia de Portugal no contexto da Ibéria. Volume II. 195-350., Lisboa: Escolar Editorakullberg_et_al_2013_a_bacia_lusitaniana.pdf
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Coelho,(ed)C., & et al (2013).  Arrábida - al-rábita. , Lisboa, 229 pp.: Associação de Município da Região de Setúbal
Klein, H., Milàn J., Clemmensen L. B., Frobøse N., Mateus O., Klein N., Adolfssen J. S., Estrup E. J., & Wings O. (2016).  Archosaur footprints (cf. Brachychirotherium) with unusual morphology from the Upper Triassic Fleming Fjord Formation (Norian–Rhaetian) of East Greenland. Geological Society, London, Special Publications. 434(1), 71-85. Abstractklein_et_al_2015_archosaur_footprints_cf._brachychirotherium_with_unusual.pdfWebsite

The Ørsted Dal Member of the Upper Triassic Fleming Fjord Formation in East Greenland is well known for its rich vertebrate fauna, represented by numerous specimens of both body and ichnofossils. In particular, the footprints of theropod dinosaurs have been described. Recently, an international expedition discovered several slabs with 100 small chirotheriid pes and manus imprints (pes length 4–4.5 cm) in siliciclastic deposits of this unit. They show strong similarities with Brachychirotherium, a characteristic Upper Triassic ichnogenus with a global distribution. A peculiar feature in the Fleming Fjord specimens is the lack of a fifth digit, even in more deeply impressed imprints. Therefore, the specimens are assigned here tentatively to cf. Brachychirotherium. Possibly, this characteristic is related to the extremely small size and early ontogenetic stage of the trackmaker. The record from Greenland is the first evidence of this morphotype from the Fleming Fjord Formation. Candidate trackmakers are crocodylian stem group archosaurs; however, a distinct correlation with known osteological taxa from this unit is not currently possible. While the occurrence of sauropodomorph plateosaurs in the bone record links the Greenland assemblage more closer to that from the Germanic Basin of central Europe, here the described footprints suggest a Pangaea-wide exchange.Supplementary material: Three-dimensional model of cf. Brachychirotherium pes–manus set (from MGUH 31233b) from the Upper Triassic Fleming Fjord Formation (Norian–Rhaetian) of East Greenland as pdf, ply and jpg files (3D model created by Oliver Wings; photographs taken by Jesper Milàn) is available at https://doi.org/10.6084/m9.figshare.c.2133546

Klein, H., Milàn J., Clemmensen L. B., Frobøse N., Mateus O., Klein N., Adolfssen J. S., Estrup E. J., & Wings O. (2015).  Archosaur footprints (cf. Brachychirotherium) with unusual morphology from the Upper Triassic Fleming Fjord Formation (Norian–Rhaetian) of East Greenland. Geological Society, London, Special Publications. 434, AbstractWebsite

The Ørsted Dal Member of the Upper Triassic Fleming Fjord Formation in East Greenland is well known for its rich vertebrate fauna, represented by numerous specimens of both body and ichnofossils. In particular, the footprints of theropod dinosaurs have been described. Recently, an international expedition discovered several slabs with 100 small chirotheriid pes and manus imprints (pes length 4–4.5 cm) in siliciclastic deposits of this unit. They show strong similarities with Brachychirotherium, a characteristic Upper Triassic ichnogenus with a global distribution. A peculiar feature in the Fleming Fjord specimens is the lack of a fifth digit, even in more deeply impressed imprints. Therefore, the specimens are assigned here tentatively to cf. Brachychirotherium. Possibly, this characteristic is related to the extremely small size and early ontogenetic stage of the trackmaker. The record from Greenland is the first evidence of this morphotype from the Fleming Fjord Formation. Candidate trackmakers are crocodylian stem group archosaurs; however, a distinct correlation with known osteological taxa from this unit is not currently possible. While the occurrence of sauropodomorph plateosaurs in the bone record links the Greenland assemblage more closer to that from the Germanic Basin of central Europe, here the described footprints suggest a Pangaea-wide exchange.Supplementary material: Three-dimensional model of cf. Brachychirotherium pes–manus set (from MGUH 31233b) from the Upper Triassic Fleming Fjord Formation (Norian–Rhaetian) of East Greenland as pdf, ply and jpg files (3D model created by Oliver Wings; photographs taken by Jesper Milàn) is available at https://doi.org/10.6084/m9.figshare.c.2133546

Schulp, A. S., Mateus O., Polcyn M., c}alves G. {\cA., & Jacobs L. L. (2019).  Angola and its role in the paleobiogeography of Gondwana. Journal of Vertebrate Paleontology, Program and Abstracts. 188. Abstract
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Costa, F., & Mateus O. (2018).  Alcovasaurus longispinus as a dacentrurine stegosaur (Dinosauria) and contributions to the diagnosis of Dacentrurinae. XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 50.: Abstract book of the XVI Annual Meeting of the European Association of Vertebrate Palaeontologists, Caparica, Portugal June 26th-July 1st, 2018. Abstractcosta__mateus_2018_eavp_abstract.pdf

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Costa, F., & Mateus O. (2018).  Alcovasaurus longispinus as a dacentrurine stegosaur (Dinosauria) and contributions to the diagnosis of Dacentrurinae. XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 50.: Abstract book of the XVI Annual Meeting of the European Association of Vertebrate Palaeontologists, Caparica, Portugal June 26th-July 1st, 2018. Abstract

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Park, J. - Y., Lee Y. - N., Currie P. J., Kobayashi Y., Koppelhus E., Barsbold R., Mateus O., Lee S., & Kim S. - H. (2020).  Additional skulls of Talarurus plicatospineus (Dinosauria: Ankylosauridae) and implications for paleobiogeography and paleoecology of armored dinosaurs. Cretaceous Research. 108, 104340. Abstractpark_et_al_2020_additional_skulls_of_talarurus_plicatospineus_dinosauria_final.pdfWebsite

Three new additional skull specimens of Talarurus plicatospineus have been recovered from the Upper Cretaceous (Cenomanian–Santonian) Bayanshiree Formation, of Bayan Shiree cliffs, eastern Gobi Desert, Mongolia. The skulls feature unique characters such as an anteriorly protruded single internarial caputegulum, around 20 flat or concave nasal-area caputegulae surrounded by a wide sulcus, a vertically oriented elongate loreal caputegulum with a pitted surface, an elongate lacrimal caputegulum positioned above the posterodorsal border of the maxilla, two longitudinally arranged large frontoparietal caputegulae surrounded by smaller rhomboid caputegulae, small but elongate medial supraorbital caputegulae, a posterior supraorbital caputegulum that is four times larger than the anterior one, up to three transverse parallel grooves on the dorsal surface of the posterior supraorbital caputegulum, postocular caputegulae along the ventral to posterior rim of the orbit that extend almost to the anteroventral margin of the squamosal horn, a longitudinal furrow tapering towards the apex of the squamosal horn, a lateral nuchal caputegulum four to five times larger than other nuchal caputegulae, and a pterygovomerine keel with a ventral margin that is dorsally positioned to the alveolar ridge. The phylogenetic analysis result showed that Talarurus is sister to the clade that includes the derived Asian ankylosaurines (Saichania chulsanensis, Tarchia kielanae, and Zaraapelta nomadis). It also shows that there was dispersal of ankylosaurines from Asia into western North America before the Cenomanian. Moreover, the rostral differences between Talarurus and Tsagantegia, another ankylosaur from the same formation, suggest possible niche partitioning between these taxa.

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Marzola, M., Mateus O., Milàn J., & Clemmensen L. B. (2017).  The 2016 Dinosaur Expedition to the Late Triassic of the Jameson Land Basin, East Greenland. Abstract book of the XV Encuentro de Jóvenes Investigadores en Paleontología/XV Encontro de Jovenes Investigadores em Paleontologia, Pombal, 428 pp.. 249–253. Abstract08._ejip_2017_-_marzola_et_al._2017._the_2016_dinosaur_expedition_to_the_late_triassic_of_the_jameson_land_basin_east_greenland.pdf

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Marzola, M., Mateus O., Milàn J., & Clemmensen L. B. (2017).  The 2016 Dinosaur Expedition to the Late Triassic of the Jameson Land Basin, East Greenland. Abstract book of the XV Encuentro de Jóvenes Investigadores en Paleontolog{\'ıa/XV Encontro de Jovenes Investigadores em Paleontologia, Pombal, 428 pp.. 249–253. Abstract
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Marzola, M., Mateus O., Milàn J., & Clemmensen {L. B. } (2017).  The 2016 Dinosaur Expedition to the Late Triassic of the Jameson Land Basin, East Greenland. 249–253. Abstract
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