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  1. Article ; Online: Franz Baron Nopcsa: A short life of research in dinosaur evolutionary paleobiology and Albanology.

    Weishampel, David B

    Anatomical record (Hoboken, N.J. : 2007)

    2022  Volume 306, Issue 7, Page(s) 1969–1975

    Abstract: The short life of Hungarian paleontologist and Albanologist, Franz Baron Nopcsa (1877-1933) is reviewed with an eye on his discoveries of the dinosaurs of Transylvania and their dwarfed nature, as well as his interest in the people of Albania, especially ...

    Abstract The short life of Hungarian paleontologist and Albanologist, Franz Baron Nopcsa (1877-1933) is reviewed with an eye on his discoveries of the dinosaurs of Transylvania and their dwarfed nature, as well as his interest in the people of Albania, especially their social organization, laws, history, and ethnography during the first and second Balkan Wars. He also engaged in espionage in Romania during World War I. In addition to his research on the dwarfed dinosaurs and their insular context, his paleontological work also focused on neo-Lamarckian evolutionary theory, the origin of avian flight, and growth and sexual dimorphism in dinosaurs based on osteology and bone microstructure.
    MeSH term(s) Male ; Animals ; Dinosaurs/anatomy & histology ; Fossils ; Biological Evolution ; Paleontology/history ; Bone and Bones
    Language English
    Publishing date 2022-11-12
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 2269667-2
    ISSN 1932-8494 ; 1932-8486
    ISSN (online) 1932-8494
    ISSN 1932-8486
    DOI 10.1002/ar.25116
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Introduction to Dinosaurs: New Ideas from Old Bones papers honoring Peter Dodson.

    Fiorillo, Anthony R / Forster, Catherine A / Weishampel, David B

    Anatomical record (Hoboken, N.J. : 2007)

    2023  Volume 306, Issue 7, Page(s) 1595–1601

    Abstract: This special volume of The Anatomical Record honors the life-long commitment to anatomy and paleontology by Professor Peter Dodson (Emeritus, University of Pennsylvania). Peter's legacy is not only rooted in his own research interests, but also in the ... ...

    Abstract This special volume of The Anatomical Record honors the life-long commitment to anatomy and paleontology by Professor Peter Dodson (Emeritus, University of Pennsylvania). Peter's legacy is not only rooted in his own research interests, but also in the wealth of former students he mentored over his career, many of whom have made their own new contributions to the fields of anatomy and paleontology through original scientific investigation. Within these 18 scientific papers, which cover multiple taxa, multiple continents, and multiple methodologies, each of the contributors brought to this volume their own unique work that can be traced back to some form of inspiration by the honoree.
    MeSH term(s) Animals ; Dinosaurs/anatomy & histology ; Paleontology ; Humans
    Language English
    Publishing date 2023-05-13
    Publishing country United States
    Document type Biography ; Introductory Journal Article
    ZDB-ID 2269667-2
    ISSN 1932-8494 ; 1932-8486
    ISSN (online) 1932-8494
    ISSN 1932-8486
    DOI 10.1002/ar.25241
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Predentary Bone and Its Significance in the Evolution of Feeding Mechanisms in Ornithischian Dinosaurs.

    Nabavizadeh, Ali / Weishampel, David B

    Anatomical record (Hoboken, N.J. : 2007)

    2016  Volume 299, Issue 10, Page(s) 1358–1388

    Abstract: The characteristic predentary bone in ornithischian dinosaurs is a unique, unpaired element located at the midline of the mandibular symphysis. Although traditionally thought to only be a plant "nipping" bone, the true functional significance of this ... ...

    Abstract The characteristic predentary bone in ornithischian dinosaurs is a unique, unpaired element located at the midline of the mandibular symphysis. Although traditionally thought to only be a plant "nipping" bone, the true functional significance of this bone among feeding mechanisms of ornithischian dinosaurs is poorly known. Recent studies of a select few ornithischian genera have suggested rotation of the mandibular corpora around their long axes relative to their midline joint articulation with the predentary bone. This study aims to re-evaluate these hypotheses as well as provide in-depth qualitative comparative descriptions of predentary bone morphology in ornithischian genera throughout all subclades, including heterodontosaurids, thyreophorans, ornithopods, and marginocephalians. Descriptions evaluate overall shape of the predentary, its articular surfaces contacting the rostral ends of the dentaries, and the morphology of the rostral extent of the dentaries and their midline symphysis. Functionally relevant morphologies in each predentary morphotype are accentuated for further speculation of feeding mechanisms. Three predentary morphotypes are described throughout ornithischian subclades and each plays a unique role in feeding adaptations. Most notably, the predentary likely evolved as a midline axial point of the mandibular symphysis for simultaneous variable movement or rotation of the mandibular corpora in many, but not all, taxa. This simultaneous movement of the hemimandibles would have aided in feeding on both sides of the jaw at once. The function of the predentary as well as other jaw adaptations is discussed for genera throughout all subclades, focusing on both general shape and joint morphology. Anat Rec, 299:1358-1388, 2016. © 2016 Wiley Periodicals, Inc.
    MeSH term(s) Animals ; Biological Evolution ; Dinosaurs/anatomy & histology ; Dinosaurs/physiology ; Eating/physiology ; Fossils ; Jaw/anatomy & histology ; Jaw/physiology
    Language English
    Publishing date 2016-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2269667-2
    ISSN 1932-8494 ; 1932-8486
    ISSN (online) 1932-8494
    ISSN 1932-8486
    DOI 10.1002/ar.23455
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A new hadrosauroid (Dinosauria: Ornithopoda) from the Late Cretaceous Baynshire Formation of the Gobi Desert (Mongolia).

    Tsogtbaatar, Khishigjav / Weishampel, David B / Evans, David C / Watabe, Mahito

    PloS one

    2019  Volume 14, Issue 4, Page(s) e0208480

    Abstract: A new genus and species of non-hadrosaurid hadrosauroid, Gobihadros mongoliensis, is described from a virtually complete and undeformed skull and postcranial skeleton, as well as extensive referred material, collected from the Baynshire Formation ( ... ...

    Abstract A new genus and species of non-hadrosaurid hadrosauroid, Gobihadros mongoliensis, is described from a virtually complete and undeformed skull and postcranial skeleton, as well as extensive referred material, collected from the Baynshire Formation (Cenomanian-Santonian) of the central and eastern Gobi Desert, Mongolia. Gobihadros mongoliensis is the first non-hadrosaurid hadrosauroid from the Late Cretaceous of central Asia known from a complete, articulated skull and skeleton. The material reveals the skeletal anatomy of a proximate sister taxon to Hadrosauridae in remarkable detail. Gobihadros is similar to Bactrosaurus johnsoni and Gilmoreosaurus mongoliensis, but can be distinguished from them in several autapomorphic traits, including the maximum number (three) of functional dentary teeth per tooth position, a premaxillary oral margin with a 'double-layer morphology', and a sigmoidal dorsal outline of the ilium with a well-developed, fan-shaped posterior process. All of these characters in Gobihadros are inferred to be convergent in Hadrosauridae. Phylogenetic analysis positions Gobihadros mongoliensis as a Bactrosaurus-grade hadrosauromorph hadrosauroid. Its relationship with Maastrichtian hadrosaurids from Asia (e.g., Saurolophus angustirostris, Kerberosaurus manakini, Wulagasaurus dongi, Kundurosaurus nagornyi) are sufficiently distant to indicate that these latter taxa owe their distribution to migration from North America across Beringia, rather than having a common Asian origin with Go. mongoliensis.
    MeSH term(s) Animals ; Bone and Bones/anatomy & histology ; Desert Climate ; Dinosaurs/anatomy & histology ; Dinosaurs/genetics ; Fossils/anatomy & histology ; Fossils/history ; History, Ancient ; Mongolia ; Paleontology ; Phylogeny ; Skull/anatomy & histology
    Language English
    Publishing date 2019-04-17
    Publishing country United States
    Document type Historical Article ; Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0208480
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book: Evolution of jaw mechanisms in ornithopod dinosaurs

    Weishampel, David B.

    (Advances in anatomy, embryology and cell biology ; 87)

    1984  

    Series title Advances in anatomy, embryology and cell biology ; 87
    Collection
    Keywords Ornithopoda ; Kiefer ; Phylogenie ; Dinosaurier
    Subject Drachenechsen ; Abstammung ; Entwicklung ; Entwicklungsgeschichte ; Phylogenese ; Stammesentwicklung ; Stammesgeschichte ; Vogelfuss-Dinosaurier
    Language English
    Size VIII, 109 S.
    Publisher Springer
    Publishing place Berlin u.a.
    Document type Book
    HBZ-ID HT002656528
    ISBN 3-540-13114-0 ; 0-387-13114-0 ; 978-3-540-13114-4 ; 978-0-387-13114-6
    Database Catalogue ZB MED Medicine, Health

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  6. Article ; Online: Jaw mechanism and dental function in the late cretaceous basal eusuchian Iharkutosuchus.

    Osi, Attila / Weishampel, David B

    Journal of morphology

    2009  Volume 270, Issue 8, Page(s) 903–920

    Abstract: Iharkutosuchus makadii is a basal eusuchian crocodylian with multicusped teeth discovered from the Upper Cretaceous of Hungary. Skull and dentition morphology indicates an active food processing for this crocodylian. First among crocodylians, a ... ...

    Abstract Iharkutosuchus makadii is a basal eusuchian crocodylian with multicusped teeth discovered from the Upper Cretaceous of Hungary. Skull and dentition morphology indicates an active food processing for this crocodylian. First among crocodylians, a combination of different analyses, including cranial adductor muscle reconstruction, tooth wear pattern, and enamel microstructure studies, is applied here to support this hypothesis. Data provide unambiguous evidence for significant dental occlusion that was a result of a unique, transverse mandibular movement. Reconstruction of the jaw adductors demonstrates strong muscles responsible for slow but active jaw closure as the motor of transverse jaw movement; nevertheless muscles producing rapid jaw closure were reduced. Macrowear orientations show a dominantly transverse movement of the mandibles completed by a slight anteroposterior component. Along with quadrate morphology, macrowear further indicates that this motion was accomplished by alternate rotation of the mandibles about the quadrate condyles. Dental morphology and wear patterns suggest two types of power stroke: a slicing-crushing stroke associated dominantly with anterior tooth-food-tooth contact (with a low degree of transverse mandibular movement) during in the early stage of mastication, and a grinding stroke with significant posterior tooth-tooth contact and a dynamic transverse movement occurring later. The patterns of microwear show a diverse diet for Iharkutosuchus including both soft and hard items. This is also supported by the microstructure of the thick, wrinkled enamel built up mostly by poorly developed columnar units. Based on wear patterns, ontogenetic variation in feeding habits of Iharkutosuchus is also recognized.
    MeSH term(s) Alligators and Crocodiles/anatomy & histology ; Alligators and Crocodiles/physiology ; Animals ; Dental Enamel/anatomy & histology ; Dental Enamel/ultrastructure ; Dental Physiological Phenomena ; Dental Restoration Wear ; Fossils ; Hungary ; Image Processing, Computer-Assisted ; Jaw/anatomy & histology ; Jaw/physiology ; Masticatory Muscles/anatomy & histology ; Models, Biological ; Palatal Muscles/anatomy & histology ; Paleodontology ; Tooth/anatomy & histology ; Tooth/ultrastructure
    Language English
    Publishing date 2009-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3084-3
    ISSN 1097-4687 ; 0022-2887 ; 0362-2525
    ISSN (online) 1097-4687
    ISSN 0022-2887 ; 0362-2525
    DOI 10.1002/jmor.10726
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  7. Article ; Online: A Late Cretaceous ceratopsian dinosaur from Europe with Asian affinities.

    Osi, Attila / Butler, Richard J / Weishampel, David B

    Nature

    2010  Volume 465, Issue 7297, Page(s) 466–468

    Abstract: Ceratopsians (horned dinosaurs) represent a highly diverse and abundant radiation of non-avian dinosaurs known primarily from the Cretaceous period (65-145 million years ago). This radiation has been considered to be geographically limited to Asia and ... ...

    Abstract Ceratopsians (horned dinosaurs) represent a highly diverse and abundant radiation of non-avian dinosaurs known primarily from the Cretaceous period (65-145 million years ago). This radiation has been considered to be geographically limited to Asia and western North America, with only controversial remains reported from other continents. Here we describe new ceratopsian cranial material from the Late Cretaceous of Iharkút, Hungary, from a coronosaurian ceratopsian, Ajkaceratops kozmai. Ajkaceratops is most similar to 'bagaceratopsids' such as Bagaceratops and Magnirostris, previously known only from Late Cretaceous east Asia. The new material unambiguously demonstrates that ceratopsians occupied Late Cretaceous Europe and, when considered with the recent discovery of possible leptoceratopsid teeth from Sweden, indicates that the clade may have reached Europe on at least two independent occasions. European Late Cretaceous dinosaur faunas have been characterized as consisting of a mix of endemic 'relictual' taxa and 'Gondwanan' taxa, with typical Asian and North American groups largely absent. Ajkaceratops demonstrates that this prevailing biogeographical hypothesis is overly simplified and requires reassessment. Iharkút was part of the western Tethyan archipelago, a tectonically complex series of island chains between Africa and Europe, and the occurrence of a coronosaurian ceratopsian in this locality may represent an early Late Cretaceous 'island-hopping' dispersal across the Tethys Ocean.
    MeSH term(s) Animal Migration ; Animals ; Asia/ethnology ; Dinosaurs/anatomy & histology ; Dinosaurs/classification ; Fossils ; Geography ; Horns/anatomy & histology ; Hungary
    Language English
    Publishing date 2010-05-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature09019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Phylogeny, histology and inferred body size evolution in a new rhabdodontid dinosaur from the Late Cretaceous of Hungary.

    Ősi, Attila / Prondvai, Edina / Butler, Richard / Weishampel, David B

    PloS one

    2012  Volume 7, Issue 9, Page(s) e44318

    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 ... ...

    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 Haţeg 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.
    MeSH term(s) Animals ; Biological Evolution ; Body Size/physiology ; Bone and Bones/anatomy & histology ; Dinosaurs/anatomy & histology ; Dinosaurs/classification ; Fossils ; Hungary ; Phylogeny
    Language English
    Publishing date 2012-09-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0044318
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A dinosaurian facial deformity and the first occurrence of ameloblastoma in the fossil record.

    Dumbravă, Mihai D / Rothschild, Bruce M / Weishampel, David B / Csiki-Sava, Zoltán / Andrei, Răzvan A / Acheson, Katharine A / Codrea, Vlad A

    Scientific reports

    2016  Volume 6, Page(s) 29271

    Abstract: Despite documentation of various types of neoplastic pathologies encountered in the vertebrate fossil record, no ameloblastic tumours have been recognised so far. Ameloblastoma is a benign neoplasic tumour with a strong preponderance for the mandible. ... ...

    Abstract Despite documentation of various types of neoplastic pathologies encountered in the vertebrate fossil record, no ameloblastic tumours have been recognised so far. Ameloblastoma is a benign neoplasic tumour with a strong preponderance for the mandible. Here, we report for the first time the presence of an ameloblastoma neoplasm in the lower jaw of a specimen referred to the derived non-hadrosaurid hadrosauroid dinosaur Telmatosaurus transsylvanicus from the uppermost Cretaceous of the Haeg Basin in Romania. The location, external appearance and internal structure of the pathological outgrowth provide clear evidence for the diagnosis of ameloblastoma in Telmatosaurus. This report extends the range of pathologies encountered in hadrosauroid dinosaurs. In addition, recognition of an ameloblastoma neoplasm in a taxon lying close to the origin of 'duck-billed' hadrosaurid dinosaurs confirms the predisposition of this clade towards neoplasia pathologies already in its basal members.
    Language English
    Publishing date 2016-07-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/srep29271
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  10. Book: The dinosauria

    Dodson, Peter / Osmólska, Halszka / Weishampel, David B

    2004  

    Author's details edited by David B. Weishampel; Peter Dodson; Halszka Osmólska
    Keywords Paläontologie ; Systematik ; Dinosaurier
    Language English
    Size xviii, 861 p, ill., maps, 29 cm
    Edition 2nd ed
    Publisher University of California Press
    Publishing place Berkeley u.a.
    Document type Book
    Note Includes bibliographical references (p. 685-774) and indexes ; Origin and relationships of Dinosauria / Michael J. Benton -- Basal Saurischia / Max C. Langer -- Ceratosauria / Ronald S. Tykoski and Timothy Rowe -- Basal Tetanurae / Thomas R. Holtz Jr., Ralph E. Molnar and Philip J. Currie -- Tyrannosauroidea / Thomas R. Holtz Jr. -- Ornithomimosauria / Peter J. Makovicky, Yoshitsugu Kobayashi and Philip J. Currie -- Therizinosauroidea / James M. Clark, Teresa Maryańska and Rinchen Barsbold -- Oviraptorosauria / Halszka Osmólska, Philip J. Currie and Rinchen Barsbold -- Troodontidae / Peter J. Makovicky and Mark A. Norell -- Dromaeosauridae / Mark A. Norell and Peter J. Makovicky -- Basal Avialae / Kevin Padian -- Prosauropoda / Peter M. Galton and Paul Upchurch -- Sauropoda / Paul Upchurch, Paul M. Barrett and Peter Dodson -- Basal Ornithischia / David B. Norman, Lawrence M. Witmer and David B. Weishampel -- Basal Thyreophora / David B. Norman, Lawrence M. Witmer and David B. Weishampel -- Stegosauria / Peter M. Galton and Paul Upchurch -- Ankylosauria / Matthew K. Vickaryous, Teresa Maryańska and David B. Weishampel -- Basal Ornithopoda / David B. Norman ... [et al.] -- Basal Iguanodontia / David B. Norman -- Hadrosauridae / John R. Horner, David B. Weishampel and Catherine A. Forster -- Pachycephalosauria / Teresa Maryańska, Ralph E. Chapman and David B. Weishampel -- Basal Ceratopsia / You Hailu and Peter Dodson -- Ceratopsidae / Peter Dodson, Catherine A. Forster and Scott D. Sampson -- Dinosaur distribution / David B. Weishampel ... [et al.] -- Dinosaur taphonomy / Anthony R. Fiorillo and David A. Eberth --
    ISBN 0520242092 ; 9780520242098
    Database Former special subject collection: coastal and deep sea fishing

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