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Young, M. T., Hua S., Steel L., Foffa D., Brusatte S. L., Thüring S., Mateus O., Ruiz-Omeñaca J. I., Havlik P., Lepage Y., & De Andrade M. B. (2015).  Addendum to ?Revision of the Late Jurassic teleosaurid genus Machimosaurus (Crocodylomorpha, Thalattosuchia)?. Royal Society Open Science. 2, , Number 2 Abstract
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Young, M. T., Hua S., Steel L., Foffa D., Brusatte S. L., Thüring S., Mateus O., Ruiz-Omeñaca J. I., Havlik P., Lepage Y., & de Andrade M. B. (2015).  Addendum to ‘Revision of the Late Jurassic teleosaurid genus Machimosaurus (Crocodylomorpha, Thalattosuchia)’. Royal Society Open Science. 2, , Number 2: The Royal Society Abstractyoung_et_al_2015_addendum_to_revision_of_the_late_jurassic_teleosaurid_genus_machimosaurus_crocodylomorpha_thalattosuchia.pdfWebsite

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Mateus, O., Pereira B., Rocha R., & Kullberg J. C. (2018).  Aspiring Geopark Oeste in Portugal: scientific highlights and importance. 8th International Conference on UNESCO Global Geoparks. , 8-14 Sept., Adamello Brenta Geopark, Trentinomateus_et_al_2018_geopark_oeste.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
da} Rocha, {R. E. B., Kullberg {J. C. R. }, & Mateus O. (2013).  A Bacia Lusitaniana: Estratigrafia, Paleogeografia e Tectónica. (Dias, Araújo, R., A, Terrinha, P., Kullberg, {J. C.}, Ed.).Geologia de Portugal no contexto da Ibéria. 195–347., 1: Escolar Editora Abstract
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Jacobs, L. L., Myers T. S., Goncalves A. O., Graf J. F., Jacobs B. F., KAPPELMAN J. W., Mateus O., Polcyn M. J., RASBURY E. T., & Vineyard D. P. (2013).  Cabinda revisited: age and environment of new Cenozoic vertebrate fossils from northern Angola. Geological Society of America Abstracts with Programs. Vol. 45, No. 7, p.0.
Ribeiro, V., & Mateus O. (2012).  Chronology of the Late Jurassic dinosaur faunas, and other reptilian faunas, from Portugal. Journal of Vertebrate Paleontology, Program and Abstracts, 2012, p. 161 ISSN 1937-2809. ribeiro__mateus_2012_chronology_dinosaurs_portugal_abstract_book_meeting_abstracts.pdf.pdf
Marzola, M., Mateus O., Russo J., & Milàn J. (2014).  Comparison of modern and fossil Crocodylomorpha eggs and contribution to the oophylogeny of Amniota. XII Annual Meeting of the European Association of Vertebrate Palaeontologists. , p. 192, Regione Piemonte: European Association of Vertebrate Palaeontologists. Museo Regionale di Scienze Naturalimarzola_et_al._2014_comparison_of_modern_and_fossil_crocodylomorpha_eggs_and_contribution_to_the_oophylogeny_of_amniota-_eavp_2014.pdf
Mateus, I., Mateus H., Antunes M. T., Mateus O., Taquet P., Ribeiro V., & Manuppella G. (1997).  Couvée, oeufs et embryons d'un dinosaure théropode du Jurassique supérieur de Lourinhã (Portugal). C.R Acad. Sci. Paris, Sciences de la terre et des planetes. 325, 71-78., Jully, Number 1 Abstractmateus_et_al_1997_eggs_embryos_nest__couvee_oeufs_et_embryons_dun_dinosaure_theropode_du_jurassique_superieur_de_lourinha_portugal.pdfWebsite

Several well preserved clutches of dinosaurs have been discovered in the upper Kimmeridgian/ Tithonian of Lourinhã (Estramadur Province, Portugal). Some eggs of one clutch contained embryo elements of a theropod dinosaur. The egg-shell resembles that of eggs which have been discovered in the Upper Jurassic of Colorado

Mateus, I., Mateus H., Antunes M. T., Mateus O., Taquet P., Ribeiro V., & Manuppella G. (1997).  Couvée, oeufs et embryons d'un dinosaure théropode du Jurassique supérieur de Lourinhã (Portugal). Comptes Rendus de l'Académie des Sciences-Series IIA-Earth and Planetary Science. 325, 71–78., Number 1 Abstract
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Mateus, I., Mateus H., Antunes M. T., Mateus O., Taquet P., Ribeiro V., & Manuppella G. (1997).  Couvée, øe}ufs et embryons d{\textquotesingle}un Dinosaure Théropode du Jurassique supérieur de Lourinha (Portugal). Comptes Rendus de l{\textquotesingle}Académie des Sciences - Series {IIA} - Earth and Planetary Science. 325, 71–78., jul, Number 1: Elsevier {BV} AbstractWebsite
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Mateus, I., Mateus H., Antunes M. T., Mateus O., Taquet P., Ribeiro V., & Manuppella G. (1997).  Couvée, œufs et embryons d'un Dinosaure Théropode du Jurassique supérieur de Lourinhã (Portugal). Comptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes. 325, 71–78., Number 1 Abstract
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Jacobs, L. L., Mateus O., Polcyn M. J., Schulp A. S., Scotese C. R., Goswami A., Ferguson K. M., Robbins J. A., Vineyard D. P., & Neto A. B. (2009).  Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean. BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE. 180, 333-341., Jan: Univ Agostinho Neto, Univ Nova Lisboa, So Methodist Univ, Univ Texas Arlington, Museu Lourinha, Nat Hist Museum Abstractjacobs_mateus_et_al_2009_cretaceous_paleogeography_paleoclimatology_and_amniote_biogeography_of_the_south_atlantic_ocean_angola_africa_currents.pdf

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Jacobs, L. L., Mateus O., Polcyn M. J., Schulp A. S., Scotese C. R., Goswami A., Ferguson K. M., Robbins J. A., Vineyard D. P., & Neto A. B. (2009).  Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean. Bulletin de la Societe Geologique de France. 180, 333-341., Number 4 Abstract
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Russo, J., Mateus O., Balbino A., & Marzola M. (2014).  Crocodylomorph eggs and eggshells from the Lourinhã Fm. (Upper Jurassic), Portugal. Comunicações Geológicas. 101, Especial I, 563-566. Abstractrusso_et_al_2014_crocodylomorph_eggs_and_eggshells_from_the_lourinha_fm_upper_jurassic_portugal.pdf

We here present fossil Crocodylomorpha eggshells from the Upper Jurassic Lourinhã Formation of Portugal, recovered from five sites: one nest from Cambelas with 13 eggs, and three partial eggs and various fragments from, Paimogo N (I), Paimogo S (II), Casal da Rola, and Peralta. All specimens but the nest were found in association with dinosaur egg material. Our research reveals that on a micro- and ultrastructural analysis, all samples present the typical characters consistent with crocodiloid eggshell morphotype, such as the shell unit shape, the organization of the eggshell layers, and the triangular blocky extinction observed with crossed nicols. We assign the material from the Lourinhã Formation to the oofamily Krokolithidae, making it the oldest crocodylomorph eggs known so far, as well as the best record for eggs of non- crocodylian crocodylomorphs. Furthermore, our study indicates that the basic structure of crocodiloid eggshells has remained stable since at least the Upper Jurassic.

Russo, J., Mateus O., Balbino A., & Marzola M. (2014).  Crocodylomorph eggs and eggshells from the Lourinhã Fm. (Upper Jurassic), Portugal. Comunica\\c cões Geológicas. 101, Especial I, 563-566. Abstract
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Russo, J., Mateus O., Balbino A., & Marzola M. (2014).  Crocodylomorph eggs and eggshells from the Lourinhã Fm. (Upper Jurassic), Portugal. Comunica\\c cões Geológicas. 101, Especial I, 563-566. Abstract
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Russo, J., Mateus O., Balbino A., & Marzola M. (2014).  Crocodylomorph eggs and eggshells from the Lourinhã Fm. (Upper Jurassic), Portugal. Comunica\\c cões Geológicas. 101, Especial I, 563-566. Abstract

We here present fossil Crocodylomorpha eggshells from the Upper Jurassic Lourinhã Formation of Portugal, recovered from five sites: one nest from Cambelas with 13 eggs, and three partial eggs and various fragments from, Paimogo N (I), Paimogo S (II), Casal da Rola, and Peralta. All specimens but the nest were found in association with dinosaur egg material. Our research reveals that on a micro- and ultrastructural analysis, all samples present the typical characters consistent with crocodiloid eggshell morphotype, such as the shell unit shape, the organization of the eggshell layers, and the triangular blocky extinction observed with crossed nicols. We assign the material from the Lourinhã Formation to the oofamily Krokolithidae, making it the oldest crocodylomorph eggs known so far, as well as the best record for eggs of non- crocodylian crocodylomorphs. Furthermore, our study indicates that the basic structure of crocodiloid eggshells has remained stable since at least the Upper Jurassic.

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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Mateus, O., Overbeeke M., & Rita F. (2008).  Dinosaur Frauds, Hoaxes and "Frankensteins": How to distinguish fake and genuine vertebrate fossils. Journal of Paleontological Techniques. 2, 1-5.. Abstractmateus_et_al_2008_dinosaur_frauds_hoaxes_and_frankensteins-_how_to_distinguish_fake_and_genuine_vertebrate_fossils._journal_of_paleontological_techniques.pdfWebsite

Dinosaurs and other fossils have been artificially enhanced, or totally forged, to increase their commercial value. The most problematic forgeries to detect are based on original fossils that are artificially assembled. Several techniques are suggested for detecting hoaxes: detailed visual examination, chemical analysis, Xray or CT-scan, and ultraviolet light. It is recommended that museums and paleontological researchers do not purchase and/or trade fossils lacking clear provenience information. Exceptions to that general rule should be closely examined using techniques described herein.

Mateus, O., Overbeeke M., & Rita F. (2008).  Dinosaur Frauds, Hoaxes and "Frankensteins": How to distinguish fake and genuine vertebrate fossils. Journal of Paleontological Techniques. 2, 1-5. Abstract
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Rotatori, F. M., Moreno-Azanza M., & Mateus O. (2018).  Dryosaurid ornithopods from the Late Jurassic of Portugal: an overview. XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 166., Caparica, Portugal June 26th-July 1st, 2018: Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa Abstractrotatori_et_al_2018_eavp_abstract.pdf

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Rotatori, F. M., Moreno-Azanza M., & Mateus O. (2018).  Dryosaurid ornithopods from the Late Jurassic of Portugal: an overview. XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 166., Caparica, Portugal June 26th-July 1st, 2018: Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa Abstract

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Russo, J., Mateus O., Marzola M., & Balbino A. (2014).  Eggs and eggshells of crocodylomorpha from the Late Jurassic of Portugal. Journal of Vertebrate Paleontology. Program and Abstracts, 2014, 218.russo_et_al_2014eggs_crocodylomorpha_portugal.pdf
Marinheiro, J., Mateus O., Alaoui A., Amani F., Nami M., & Ribeiro C. (2014).  Elephas and other vertebrate fossils near Taghrout, Morocco. Journal of Vertebrate Paleontology. Program and Abstracts, 2014, 178.marinheiro_et_al._2014_elephas_and_other_vertebrate_fossils_near_taghrout.pdf
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Mateus, O., Callapez P. M., Polcyn M. J., Schulp A. S., Gonçalves A. O., & Jacobs L. L. (2019).  The Fossil Record of Biodiversity in Angola Through Time: A Paleontological Perspective. (Huntley, Brian J., Russo, Vladimir, Lages, Fernanda, Ferrand, Nuno, Ed.).Biodiversity of Angola: Science & Conservation: A Modern Synthesis. 53–76.: Springer International Publishing Abstractmateus2019_chapter_thefossilrecordofbiodiversityi.pdf

This chapter provides an overview of the alpha paleobiodiversity of Angola based on the available fossil record that is limited to the sedimentary rocks, ranging in age from Precambrian to the present. The geological period with the highest paleobiodiversity in the Angolan fossil record is the Cretaceous, with more than 80{%} of the total known fossil taxa, especially marine molluscs, including ammonites as a majority among them. The vertebrates represent about 15{%} of the known fauna and about one tenth of them are species firstly described based on specimens from Angola.

Mateus, O., Callapez P. M., Polcyn M. J., Schulp A. S., Gonçalves A. O., & Jacobs L. L. (2019).  The Fossil Record of Biodiversity in Angola Through Time: A Paleontological Perspective. (Huntley, Brian J., Russo, Vladimir, Lages, Fernanda, Ferrand, Nuno, Ed.).Biodiversity of Angola: Science {&} Conservation: A Modern Synthesis. 53–76., Cham: Springer International Publishing Abstract

This chapter provides an overview of the alpha paleobiodiversity of Angola based on the available fossil record that is limited to the sedimentary rocks, ranging in age from Precambrian to the present. The geological period with the highest paleobiodiversity in the Angolan fossil record is the Cretaceous, with more than 80{%} of the total known fossil taxa, especially marine molluscs, including ammonites as a majority among them. The vertebrates represent about 15{%} of the known fauna and about one tenth of them are species firstly described based on specimens from Angola.

Ribeiro, C., Callapez P. M., & Mateus O. (2018).  Fossil vertebrates in the paleontological collections of the Science Museum (University of Coimbra, Portugal). XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 163., Caparica, Portugal June 26th-July 1st, 2018: Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa Abstractribeiro_et_al_2018_eavp_abstract.pdf

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Pereira, B., Mateus O., Kullberg J. C., & Rocha R. (2017).  The geotouristic potential of the Oeste Region of Portugal. 14th European Geoparks Conference | Abstracts Book 167. 167., Ponta Delgadapereira_et_al_2017_geotouristic_oeste.pdf
Pereira, B., Mateus O., Kullberg J. C., & Rocha R. (2017).  The geotouristic potential of the Oeste Region of Portugal. Abstract
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Hayashi, S., Redelstorff R., Mateus O., Watabe M., & Carpenter K. (2014).  Gigantism of stegosaurian osteoderms. Journal of Vertebrate Paleontology. Program and Abstracts, 2014, 145.hayashi_et_al_2014_gigantism_of_stegosaurian_osteoderms.pdf
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de Ricqlès, A., Mateus O., Antunes M. T., & Taquet P. (2001).  Histomorphogenesis of embryos of Upper Jurassic Theropods from Lourinha (Portugal). Comptes Rendus De L Academie Des Sciences Serie Ii Fascicule a-Sciences De La Terre Et Des Planetes. 332, 647-656., Jan Abstractricqles_mateus_et_al_2011_histomorphogenesis_of_embryos_of_upper_jurassic_theropods_from_lourinha_portugal.pdfWebsite

Remains of dinosaurian embryos, hatchlings and early juveniles are currently the subject of increasing interest, as new discoveries and techniques now allow to analyse palaeobiological subjects such as growth and life history strategies of dinosaurs. So far, available ‘embryonic’ material mainly involved Ornithopods and some Theropods of Upper Cretaceous age. We describe here the histology of several bones (vertebrae, limb bones) from the tiny but exceptionally well preserved in ovo remains of Upper Jurassic Theropod dinosaurs from the Paimogo locality near Lourinhã (Portugal). This Jurassic material allows to extend in time and to considerably supplement in great details our knowledge of early phases of growth in diameter and in length of endoskeletal bones of various shape, as well as shape modelling among carnivorous dinosaurs. Endochondral ossification in both short and long bones involves extensive pads of calcified cartilages permeated by marrow buds. We discuss the likely occurrence of genuine cartilage canals in dinosaurs and of an avian-like ‘medullary cartilaginous cone’ in Theropods. Patterns of periosteal ossification suggest high initial growth rates (20 μ m·day−1 or more), at once modulated by precise and locally specific changes in rates of new bone deposition. The resulting very precise shape modelling appears to start early and to involve at once some biomechanical components.

de Ricqlès, A., Mateus O., Antunes M. T., & Taquet P. (2001).  Histomorphogenesis of embryos of Upper Jurassic Theropods from Lourinhã (Portugal). Comptes Rendus de l{\textquotesingle}Académie des Sciences - Series {IIA} - Earth and Planetary Science. 332, 647–656., may, Number 10: Elsevier {BV} AbstractWebsite
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de Ricqlès, A., Mateus O., Antunes M. T., & Taquet P. (2001).  Histomorphogenesis of embryos of Upper Jurassic theropods from Lourinhã (Portugal). Comptes Rendus de l'Académie des Sciences-Series IIA-Earth and Planetary Science. 332, 647–656., Number 10 Abstract
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de Ricqlès, A., Mateus O., Antunes M. T., & Taquet P. (2001).  Histomorphogenesis of embryos of Upper Jurassic theropods from Lourinhã (Portugal) | Histomorphogenèse du squelette d'embryons de dinosaures théropodes du Jurassique supérieur de Lourinhã (Portugal). Comptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes. 332, 647–656., Number 10 Abstract
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Marzola, M., Russo J., & Mateus O. (2015).  Identification and comparison of modern and fossil crocodilian eggs and eggshell structures. Historical Biology. 27(1), 115-133. Abstractmarzola_et_al_2015_identification_and_comparison_of_modern_and_fossil_crocodilian_eggs_and_eggshell_structures.pdfWebsite

Eggshells from the three extant crocodilian species Crocodylus mindorensis (Philippine Crocodile), Paleosuchus palpebrosus (Cuvier's Smooth-fronted Caiman or Musky Caiman) and Alligator mississippiensis (American Alligator or Common Alligator) were prepared for thin section and scanning electron microscope analyses and are described in order to improve the knowledge on crocodilian eggs anatomy and microstructure, and to find new apomorphies that can be used for identification. Both extant and fossil crocodilian eggs present an ornamentation that vary as anastomo-, ramo- or the here newly described rugosocavate type. The angusticaniculate pore system is a shared character for Crocodylomorpha eggshells and some dinosaurian and avian groups. Previously reported signs of incubated crocodilian eggs were found also on our only fertilised and hatched egg. Paleosuchus palpebrosus presents unique organization and morphology of the three eggshell layers, with a relatively thin middle layer characterised by dense and compact tabular microstructure.

Marzola, M., Russo J., & Mateus O. (2015).  Identification and comparison of modern and fossil crocodilian eggs and eggshell structures. Historical Biology. 27, 115-133., Number 1 Abstract
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Rotatori, F. M., Moreno-Azanza M., & Mateus O. (2018).  Isolated dryosaurid (Dinosauria: Ornithopoda) cranial remains from the Late Jurassic of Portugal. EJIP Life finds a way. 95-98., Gasteiz, Spainrotatori_et_al_2018_ejip.pdf
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Pereira, B. C., Benton M. J., Ruta M., & Mateus O. (2015).  Mesozoic echinoid diversity in Portugal: Investigating fossil record quality and environmental constraints on a regional scale. Palaeogeography, Palaeoclimatology, Palaeoecology. 424, 132 - 146. Abstractpereira_e_al_2015_mesozoic_echinoids_portugal.pdfWebsite

Abstract Several analyses of diversity through geological time use global, synoptic databases, and this practice often makes it difficult to distinguish true signals in changing diversity from regional-scale sampling and/or geological artefacts. Here we investigate how echinoid diversity changed through the Mesozoic of the Lusitanian basin in Portugal based on a comprehensive, revised database, and seek to distinguish biological signal from geological or environmental constraints. The observed diversity pattern is far from having a defined trend, showing many fluctuations that appear to be linked with gaps in the geological record. This study revealed that, independently of the method used, whether correlation tests or model fitting, the diversity signal is not completely explained by the studied sampling proxies. Among the different proxies, marine facies variation in combination with outcrop area best explains the palaeodiversity curve.

Pereira, B. C., Benton M. J., Ruta M., & Mateus O. (2015).  Mesozoic echinoid diversity in Portugal: Investigating fossil record quality and environmental constraints on a regional scale. Palaeogeography, Palaeoclimatology, Palaeoecology. 424, 132-146. Abstract
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Russo, J., & Mateus O. (2019).  A new Ankylosaur Dinosaur Skeleton from the Upper Jurassic of Portugal. Journal of Vertebrate Paleontology, Program and Abstracts. 184.russo__mateus_2019_svp_abstract.pdf
Russo, J., & Mateus O. (2019).  A new Ankylosaur Dinosaur Skeleton from the Upper Jurassic of Portugal. Journal of Vertebrate Paleontology, Program and Abstracts. 184. Abstract
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Mateus, O., Milàn J., Romano M., & Whyte M. A. (2011).  New finds of stegosaur tracks from the Upper Jurassic Lourinhã Formation, Portugal. Acta Palaeontologica Polonica. 56(1), 651-658. Abstractmateus_et_al_2011_-_deltapodus_with_skin_impressions_from_portugal.pdf

Eleven new tracks from the Upper Jurassic of Portugal are described and attributed to the stegosaurian ichnogenus Deltapodus. One track exhibits exceptionally well−preserved impressions of skin on the plantar surface, showing the stegosaur foot to be covered by closely spaced skin tubercles of ca. 6 mm in size. The Deltapodus specimens from the Aalenian of England represent the oldest occurrence of stegosaurs and imply an earlier cladogenesis than is recognized in the body fossil record.

Mateus, O., Milàn J., Romano M., & Whyte M. A. (2011).  New finds of stegosaur tracks from the Upper Jurassic Lourinhã formation, Portugal. Acta Palaeontologica Polonica. 56, 651-658., Number 3 Abstract
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Allain, R., Taquet P., Battail B., Dejax J., Richir P., Veran M., Limon-Duparcmeur F., & et al (1999).  A new genus of sauropod dinosaur from the Gres superieurs formation (Aptian-Albian) of Laos. Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science. 329, 609–616., Number 8 Abstract
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Allain, R., Taquet P., Battail B., Dejax J., Richir P., Véran M., Limon-Duparcmeur F., & et al (1999).  A new genus of sauropod dinosaur from the Gres superieurs formation (Aptian-Albian) of Laos | Un nouveau genre de dinosaure sauropode de la formation des Gres superieurs (Aptien-Albien) du Laos. Comptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes. 329, 609–616., Number 8 Abstract
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Foth, C., Evers S., Pabst B., Mateus O., Flisch A., Patthey M., & Rauhut O. W. M. (2015).  New insights into the lifestyle of Allosaurus (Dinosauria: Theropoda) based on another specimen with multiple pathologies. PeerJ PrePrints. 3, e824v1., 2015 Abstractfoth_et_al_2015_peerj-preprints-824.pdfWebsite

Adult large-bodied theropods are often found with numerous pathologies. A large, almost complete, probably adult Allosaurus specimen from the Howe Stephens Quarry, Morrison Formation (Late Kimmeridgian–Early Tithonian), Wyoming, shows multiple pathologies. Pathologic bones include the left dentary, two cervical vertebrae, one cervical and several dorsal ribs, the left scapula, the left humerus, right ischium, and two left pedal phalanges. These pathologies can be classified as follows: the fifth cervical vertebra, the scapula, several ribs and the ischium are traumatic, and a callus on the shaft of the left pedal phalanx II-2 is traumatic-infectious. Traumatically fractured elements exposed to frequent movement (e.g. the scapula and the ribs) show a tendency to develop pseudarthroses instead of callus healing. The pathologies in the lower jaw and a reduced flexor tubercle of the left pedal phalanx II-2 are most likely traumatic or developmental in origin. The pathologies on the fourth cervical are most likely developmental in origin or idiopathic, that on the left humerus is infectious or idiopathic, whereas left pedal phalanx IV-1 is classified as idiopathic. With exception of the ischium, all traumatic / traumatic-infectious pathologic elements show unambiguous evidences of healing, indicating that the respective pathologies did not cause the death of this individual. Alignment of the scapula and rib pathologies from the left side suggests that all may have been caused by a single traumatic event. The ischial fracture may have been fatal. The occurrence of multiple traumatic pathologies again underlines that large-bodied theropods experienced frequent injuries during life, indicating an active predatory lifestyle, and their survival perhaps supports a gregarious behavior for Allosaurus. Signs of infections are scarce and locally restricted, indicating a successful prevention of the spread of pathogens, as it is the case in extant reptiles (including birds).