@article{MTMT:2707229, title = {The evolution of jaw mechanism and dental function in heterodont crocodyliforms}, url = {https://m2.mtmt.hu/api/publication/2707229}, author = {Ősi, Attila}, doi = {10.1080/08912963.2013.777533}, journal-iso = {HIST BIOL}, journal = {HISTORICAL BIOLOGY}, volume = {26}, unique-id = {2707229}, issn = {0891-2963}, abstract = {Heterodont dentition sometimes including multicuspid crowns appeared in numerous fossil forms through all main lineages of the Crocodyliformes. Teeth in these complex dentitions frequently bear wear facets that are exclusive indicators of tooth-tooth occlusion. Besides, dental features, specialisations of the jaw apparatus, jaw adductors and mandibular movement can be recognised, all reflecting a high variability of jaw mechanism and of intraoral food processing. Comparative study of these features revealed four main types of jaw mechanism, some of which evolved independently in several lineages of Crocodyliformes. Isognathous orthal jaw closure (precise jaw joint, rough wear facets) is characteristic for heterodont protosuchians and all forms possessing crushing posterior teeth. Proal movement (protractive powerstroke) occurred independently in Malawisuchus and Chimaerasuchus is supported by the antagonistic, vertically oriented carinae. Developed external adductors are the main indicators of palinal movement (retractive powerstroke) that evolved at least two times in various South American taxa. The fourth type (in Iharkutosuchus) is characterised by lateromedial mandibular rotation supported by extensive horizontal wear facets. This evolutionary scenario resembles that of the masticatory system of mammals and suggests that the ecological roles of some mammalian groups in North America and Asia were occupied in Western Gondwana by highly specialised crocodyliforms. http://www.zoobank.org/urn:lsid:zoobank.org:pub:D6CE962F-2B38-47F8-BD4B-B9E035917F20}, keywords = {PHYLOGENETIC-RELATIONSHIPS; Dental Occlusion; feeding apparatus; crocodyliformes; heterodont dentition; MOLAR MICROWEAR; dental wear; NORTHERN MALAWI; CRETACEOUS DINOSAUR; MARILIASUCHUS-AMARALI; BAURU BASIN; UROMASTIX-AEGYPTIUS AGAMIDAE; BASAL EUSUCHIAN CROCODYLIFORM; NOTOSUCHUS-TERRESTRIS WOODWARD; complex jaw mechanism; jaw adductors}, year = {2014}, eissn = {1029-2381}, pages = {279-414}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} } @article{MTMT:2359731, title = {Sympatry of two ankylosaurs (Hungarosaurus and cf. Struthiosaurus) in the Santonian of Hungary}, url = {https://m2.mtmt.hu/api/publication/2359731}, author = {Ősi, Attila and Prondvai, Edina}, doi = {10.1016/j.cretres.2013.03.006}, journal-iso = {CRETACEOUS RES}, journal = {CRETACEOUS RESEARCH}, volume = {44}, unique-id = {2359731}, issn = {0195-6671}, abstract = {Abstract A complete and well-preserved right ankylosaurian humerus from the Upper Cretaceous (Santonian) Csehbánya Formation of Iharkút, western Hungary is described here. Based on its osteological features and 21.5 cm adult length, the new specimen is markedly different from the slender humerus of Hungarosaurus, the previously known ankylosaur from the locality, and more similar to that of Struthiosaurus. Thus, the new Hungarian specimen is tentatively assigned here to cf. Struthiosaurus thereby dating back the first occurrence of this genus to the Santonian. The new fossil demonstrates the sympatric co-existence of two different nodosaurid ankylosaurs (a smaller, robust form with 2–2.5 m total body length and a larger, cursorial form with 4–4.5 m body length) in the Iharkút fauna. This also suggests that the pattern of the European ankylosaur diversity was more complex than previously thought.}, keywords = {Hungary; Late cretaceous; Co-existence; cf. Struthiosaurus; Hungarosaurus}, year = {2013}, eissn = {1095-998X}, pages = {58-63}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} } @inbook{MTMT:2148941, title = {Preliminary Overview of Late Cretaceous Turtle Diversity in Eastern Central Europe (Austria, Hungary, and Romania). Morphology and Evolution of Turtles}, url = {https://m2.mtmt.hu/api/publication/2148941}, author = {Rabi, Márton and Vremir, M and Tong, H}, booktitle = {Morphology and Evolution of Turtles}, doi = {10.1007/978-94-007-4309-0_19}, unique-id = {2148941}, keywords = {Europe; Hungary; Austria; Romania; Late cretaceous; Pleurodira; Bothremydidae; Kallokibotion; Fossil turtles; Foxemys; Dortokidae; Cryptodira}, year = {2013}, pages = {307-336} } @article{MTMT:2069911, title = {Phylogeny, Histology and Inferred Body Size Evolution in a New Rhabdodontid Dinosaur from the Late Cretaceous of Hungary}, url = {https://m2.mtmt.hu/api/publication/2069911}, author = {Ősi, Attila and Prondvai, Edina and Butler, R and Weishampel, DB}, doi = {10.1371/journal.pone.0044318}, journal-iso = {PLOS ONE}, journal = {PLOS ONE}, volume = {7}, unique-id = {2069911}, issn = {1932-6203}, abstract = {Background: Rhabdodontid ornithopod dinosaurs are characteristic elements of Late Cretaceous European vertebrate faunas and were previously collected from lower Campanian to Maastrichtian continental deposits. Phylogenetic analyses have placed rhabdodontids among basal ornithopods as the sister taxon to the clade consisting of Tenontosaurus, Dryosaurus, Camptosaurus, and Iguanodon. Recent studies considered Zalmoxes, the best known representative of the clade, to be significantly smaller than closely related ornithopods such as Tenontosaurus, Camptosaurus, or Rhabdodon, and concluded that it was probably an island dwarf that inhabited the Maastrichtian Hat¸eg Island. Methodology/Principal Findings: Rhabdodontid remains from the Santonian of western Hungary provide evidence for a new, small-bodied form, which we assign to Mochlodon vorosi n. sp. The new species is most similar to the early Campanian M. suessi from Austria, and the close affinities of the two species is further supported by the results of a global phylogenetic analysis of ornithischian dinosaurs. Bone histological studies of representatives of all rhabdodontids indicate a similar adult body length of 1.6–1.8 m in the Hungarian and Austrian species, 2.4–2.5 m in the subadults of both Zalmoxes robustus and Z. shqiperorum and a much larger, 5–6 m adult body length in Rhabdodon. Phylogenetic mapping of femoral lengths onto the results of the phylogenetic analysis suggests a femoral length of around 340 mm as the ancestral state for Rhabdodontidae, close to the adult femoral lengths known for Zalmoxes (320–333 mm). Conclusions/Significance: Our analysis of body size evolution does not support the hypothesis of autapomorhic nanism for Zalmoxes. However, Rhabdodon is reconstructed as having undergone autapomorphic giantism and the reconstructed small femoral length (245 mm) of Mochlodon is consistent with a reduction in size relative to the ancestral rhabdodontid condition. Our results imply a pre-Santonian divergence between western and eastern rhabdodontid lineages within the western Tethyan archipelago.}, year = {2012}, eissn = {1932-6203}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} } @inbook{MTMT:1464155, title = {The Late Cretaceous continental vertebrate fauna from Iharkút, western Hungary: a review}, url = {https://m2.mtmt.hu/api/publication/1464155}, author = {Ősi, Attila and Makádi, László and Rabi, Márton and Szentesi, Zoltán and Botfalvai, Gábor and Gulyás, P}, booktitle = {Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems}, unique-id = {1464155}, year = {2012}, pages = {533-570}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X; Szentesi, Zoltán/0000-0002-7019-5478; Botfalvai, Gábor/0000-0002-5479-9036} } @article{MTMT:2112407, title = {A new species of the side-necked turtle Foxemys (Pelomedusoides: Bothremydidae) from the Late Cretaceous of Hungary and the historical biogeography of the Bothremydini}, url = {https://m2.mtmt.hu/api/publication/2112407}, author = {Rabi, Márton and Tong, H and Botfalvai, Gábor}, doi = {10.1017/S0016756811000756}, journal-iso = {GEOL MAG}, journal = {GEOLOGICAL MAGAZINE}, volume = {149}, unique-id = {2112407}, issn = {0016-7568}, abstract = {The continental deposits of the Upper Cretaceous (Santonian) Csehbánya Formation of the Bakony Mountains in Hungary yielded abundant remains of a bothremydid side-necked turtle, which are attributed to a new species of the genus Foxemys, Foxemys trabanti. F. trabanti shows strong affinities with the European monophyletic group Foxemydina owing to the absence of pits in the upper and lower triturating surfaces, the exclusion of the jugal from the triturating surface, the separation of the Eustachian tube and the stapes by a narrow fissure, the presence of deep and narrow fossa pterygoidei, the partially closed foramen jugulare posterius and the pentagonal shape of the basisphenoid in ventral view. Among the Foxemydina the bothremydid from Iharkút is more closely related to F. mechinorum than to Polysternon provinciale from the Early Campanian of France, mainly because of the position of the occipital condyle relative to the mandibular condyles of the quadrate. The new remains represent the only record of the Foxemydina outside ofWestern Europe and provide the earliest known occurrence of this endemic, freshwater group in the former Mediterranean Basin. The historical biogeography of the tribe Bothremydini is investigated and a hypothesis of migration from Africa to North America via the high-latitude Thulean route is put forward. © Cambridge University Press 2011.}, keywords = {Hungary; species occurrence; new record; new species; Turtles; paleontology; palaeobiogeography; paleoecology; Bakony Mountains; turtle; Transdanubian Mountains; PALEOBIOGEOGRAPHY; Late cretaceous; Hypothesis testing; Santonian; Testudines; Pelomedusoides; Campanian; Pleurodira; Bothremydidae}, year = {2012}, eissn = {1469-5081}, pages = {662-674}, orcid-numbers = {Botfalvai, Gábor/0000-0002-5479-9036} } @article{MTMT:2523293, title = {Survival of Theriosuchus (Mesoeucrocodylia: Atoposauridae) in a Late Cretaceous archipelago: a new species from the Maastrichtian of Romania}, url = {https://m2.mtmt.hu/api/publication/2523293}, author = {Martin, JE and Rabi, Márton and Csiki, Z}, doi = {10.1007/s00114-010-0702-y}, journal-iso = {SCI NAT-HEIDELBERG}, journal = {NATURWISSENSCHAFTEN}, volume = {97}, unique-id = {2523293}, issn = {0028-1042}, abstract = {Small terrestrial non-eusuchian mesoeucrocodylians are common components of Cretaceous assemblages of Gondwanan provinces with notosuchians and araripesuchids as flagship taxa in South America, Africa and Madagascar, well into the Late Cretaceous. On the other hand, these are exceedingly rare in Laurasian landmasses during the Late Cretaceous. Small terrestrial mesoeucrocodylians from Europe were often referred to the genus Theriosuchus, a taxon with stratigraphic range extending from the Late Jurassic to the late Early Cretaceous. Theriosuchus is abundantly reported from various European localities, although Asiatic and possibly North American members are also known. It has often been closely associated with the first modern crocodilians, members of the Eusuchia, because of the presence of procoelous vertebrae, a widespread key character diagnosing the Eusuchia. Nevertheless, the relationships of Theriosuchus have not been explored in detail although one species, Theriosuchus pusillus, has been extensively described and referred in numerous works. Here, we describe a new basal mesoeucrocodylian, Theriosuchus sympiestodon sp. nov. from the Maastrichtian of the HaA eg pound Basin, Romania, suggesting a large temporal gap (about 58 myr) in the fossil record of the genus. Inclusion of the new taxon, along with Theriosuchus guimarotae, in a phylogenetic analysis confirms its referral to the genus Theriosuchus, within a monophyletic atoposaurid clade. Although phylogenetic resolution within this clade is still poor, the new taxon appears, on morphological grounds, to be most closely related to T. pusillus. The relationships of Atoposauridae within Mesoeucrocodylia and especially to Neosuchia are discussed in light of the results of the present contribution as well as from recent work. Our results raise the possibility that Atoposauridae might not be regarded as a derived neosuchian clade anymore, although further investigation of the neosuchian interrelationships is needed. Reports of isolated teeth referable to a closely related taxon from the Upper Cretaceous of Romania and France, together with the presence of Doratodon and Ischyrochampsa, indicate a previously unsuspected diverse assemblage of non-eusuchian mesoeucrocodylians in the Late Cretaceous European archipelago.}, year = {2010}, eissn = {1432-1904}, pages = {845-854} } @CONFERENCE{MTMT:2524708, title = {Specialized basal eusuchian crocodilians in the Late Cretaceous of Europe: evidence for the hylaeochampsid affinites of Acynodon and its implication on alligatoroid biogeography}, url = {https://m2.mtmt.hu/api/publication/2524708}, author = {Rabi, Márton and Ősi, Attila}, booktitle = {Abstract volume of the 8th Annual Meeting of the EAVP, Aix-en-Provance}, unique-id = {2524708}, year = {2010}, pages = {71}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} } @article{MTMT:152055, title = {First report on a new basal eusuchian crocodyliform with multicusped teeth from the Upper Cretaceous (Santonian) of Hungary}, url = {https://m2.mtmt.hu/api/publication/152055}, author = {Ősi, Attila and Clark, JM and Weishampel, DB}, doi = {10.1127/0077-7749/2007/0243-0169}, journal-iso = {NEUES JAHRB GEOL P-A}, journal = {NEUES JAHRBUCH FÜR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN}, volume = {243}, unique-id = {152055}, issn = {0077-7749}, year = {2007}, eissn = {2363-717X}, pages = {169-177}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} } @article{MTMT:1203309, title = {Hungarosaurus tormai, a new ankylosaur (Dinosauria) from the Upper Cretaceous of Hungary}, url = {https://m2.mtmt.hu/api/publication/1203309}, author = {Ősi, Attila}, doi = {10.1671/0272-4634(2005)025[0370:HTANAD]2.0.CO;2}, journal-iso = {J VERTEBR PALEONTOL}, journal = {JOURNAL OF VERTEBRATE PALEONTOLOGY}, volume = {25}, unique-id = {1203309}, issn = {0272-4634}, year = {2005}, eissn = {1937-2809}, pages = {370-383}, orcid-numbers = {Ősi, Attila/0000-0003-2967-997X} }