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Mateus, O. (1999).  Upper Jurassic dinosaurs of Lourinhã (Portugal). Journal of Vertebrate Paleontology. 19, 62., Number (Suppl. to 3) Abstract
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Mateus, O., Callapez P. M., & Puértolas-Pascual E. (2017).  The oldest Crocodylia? a new eusuchian from the Late Cretaceous (Cenomanian) of Portugal. Journal of Vertebrate Paleontology, Program and Abstracts. 2017, 160. Abstractmateus_et_al_2017_oldest_crocodylia_svp_2017_abstract.pdf

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Mateus, O. (2010).  Paleontological collections of the Museum of Lourinhã (Portugal). (JM Brandão, Callapez, PM, O. Mateus, Castro, P, Ed.).Colecções e museus de Geologia: missão e gestão. 121–126., 1: Ed. Universidade de Coimbra e Centro de Estudos de História e Filosofia da Ciência Abstract
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Mateus, O., Natário C., Araújo R., & Castanhinha R. (2008).  A new specimen of spinosaurid dinosaur aff. Baryonyx from the Early Cretaceous of Portugal. Livro de Resumos do X Congresso Luso-Espanhol de Herpetologia. 51., Jan Abstract

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Mateus, I., Mateus H., Antunes M. T., Mateus O., Taquet P., Ribeiro V., & Manuppella G. (1998).  Upper Jurassic Theropod Dinosaur embryos from Lourinhã (Portugal). Mem. Acad. Ciências de Lisboa. 37, 101-109. Abstractmateus_et_al_1998_-_upper_jurassic_theropod_dinosaur_embryos_from_lourinha_portugal_-_upper_jurassic_palaeoenvironments_in_portugal_ed._....pdfWebsite

Upper Jurassic nesting site from Paimogo (Lourinhã, Portugal) yielded the oldest dinosaur theropod embryos ever found. Numerous bones, including skull bones, from the skeleton of these embryos have been collected. The study of bones and embryos offers the possibility to learn more on the early life of theropod dinosaurs.

Mateus, O. (1999).  Monofilia dos dinossauros e Origem das Aves: Serão as aves dinossauros?. (P, P Catry, F Moreira, Ed.).Actas do II Congresso de Ornitologia. 184-185., Lisboa: SPEA- Sociedade Portuguesa para o Estudo das Aves Abstract
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Mateus, O., Natario C., Araujo R., & Castanhinha R. (2008).  A new specimen of spinosaurid dinosaur aff. Baryonyx from the Early Cretaceous of Portugal. Livro de Resumos do X Congresso Luso-Espanhol de Herpetologia. 51–51., Coimbra Abstract
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Mateus, O., Maidment S. C. R., & Christiansen N. A. (2008).  A new specimen aff. Dacentrurus armatus (Dinosauria: Stegosauridae) from the Late Jurassic of Portugal. Livro de Resumos de Tercer Congreso Latinoamericano de Paleontologia de Vertebrados. 157., Neuquén, Argentina Abstractmateus_et_al_2008_a_new_specimen_aff._dacentrurus_armatus_dinosauria_stegosauridae_from_the_late_jurassic_of_portugal.pdf

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Mateus, O. (2014).  Cracking dinosaur endothermy: paleophysiology unscrambled. NA, , 1 Abstract

The amniote eggshell functions as a respiratory structure adapted for the optimal transmission of respiratory gasses to and from the embryo according to its physiological requirements. Therefore amniotes with higher oxygen requirements, such as those that sustain higher metabolic rates, can be expected to have eggshells that can maintain a greater gas flux to and from the egg. Studies of extant amniotes have found that eggshells of reduced porosity impose a limit on the metabolic rate of the offspring. Here we show a highly significant relationship between metabolic rates and eggshell porosity in extant amniotes that predicts highly endothermic metabolic rates in dinosaurs. This study finds the eggshell porosity of extant endotherms to be significantly higher than that of extant ectotherms. Eggshell porosity values of dinosaurs are found to be significantly higherthan that of extant ectotherms, but not extant endotherms. Dinosaur eggshells are commonly preserved in the fossil record, and porosity may be readily identified and measured. This provides a simple tool to identify metabolic rates in extinct egg-laying tetrapods whose eggs possessed a mineralized shell

Mateus, O. (2008).  Two ornithischian dinosaurs renamed: Microceratops Bohlin 1953 and Diceratops Lull 1905. Journal of Paleontology. 82, , Number 2 Abstract
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Mateus, O., & Jacinto J. (2008).  Hemidactylus turcicus. Atlas dos Anfíbios e Répteis de Portugal. 130-131., Lisboa: A. Loureiro, N. Ferrand de Almeida, M.A. Carretero, O.S. Paulo. Instituto da Conservação da Natureza e da Biodiversidademateus__jacinto_2008_hemidactylus_turcicus_in_atlas_dos_anfibios_e_repteis_de_portugal.pdf
Mateus, O., Butler R. J., Brusatte S. L., Whiteside J. H., & Steyer J. S. (2014).  The first phytosaur (Diapsida, Archosauriformes) from the Late Triassic of the Iberian Peninsula. Journal of Vertebrate Paleontology. 34, 970–975., Number 4 Abstract
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Mateus, O., & Antunes M. T. (2003).  A new dinosaur tracksite in the Lower Cretaceous of Portugal. Ciências da Terra (UNL). 15, 253–262. Abstract
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Mateus, O., & Marzola M. (2014).  Dinosaur taphonomy in the Lourinhã Formation (Late Jurassic, Portugal). 7th International Meeting on Taphonomy and Fossilization, Taphos 2014. 60-61., Ferrara, Italymateus__marzola_2014_lourinha_taphonomy_ferrara_taphonomy_meeting_2014.pdf
Mateus, O. (1999).  Monofilia dos dinossauros e Origem das Aves: Serão as aves dinossauros?. (Spea- Sociedade Portuguesa para o Estudo das Aves, P, P Catry, F Moreira, Ed.).Actas do II Congresso de Ornitologia. 184-185., Lisboa Abstract
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Mateus, O. (2010).  First records of crocodyle and pterosaur tracks in the Upper Jurassic of Portugal.. New Mexico Museum of Natural History and Science Bulletin. 51, 83–87., 1, Number NA Abstract

The Upper Jurassic of Portugal has a rich vertebrate fauna well documented from both body and trace fossils. Although the occurrence of crocodyles and pterosaurs is well documented from body fossils, trace fossils from both groups were unknown until now. Here we describe an isolated crocodyle-like track from Praia da Peralta and pterosaur tracks from the Kimmeridgian of Pedreira do Avelino, Sesimbra (Azóia Fm.) and Porto das Barcas, Lourinhã (Lourinhã Fm.). An enigmatic track suggests the possible presence of a small, tail-dragging tetrapod. Possible track-makers are suggested based on the known Late Jurassic vertebrate fauna of Portugal.

Mateus, O., & Azinheira C. (1996).  Passeriformes nidificantes da Ribeira da Viscossa (Évora). (Spea, Ed.).Livro de resumos do I Congresso de Ornitologia. Abstract
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Mateus, O., Callapez P. M., Polcyn M. J., Schulp A. S., Gonçalves A. O., & Jacobs L. L. (2019).  O registo fóssil da biodiversidade em Angola ao longo do tempo: uma perspectiva paleontológica. (Huntley B.J., Russo V., Lages F., Ferrand N., Ed.).Biodiversidade de Angola: Ciência e Conservação - Uma Síntese Moderna. 89-116., Porto: Arte & Ciência Abstractmateus_et_al_2019_paleobiodiversidade_angola.pdf

Este capítulo apresenta uma visão geral da paleobiodiversidade alfa de Angola com base no registo fóssil disponível, o qual se limita às rochas sedimentares, a sua idade variando entre o Pré‑Câmbrico e o pre‑
sente. O período geológico com a maior paleobiodiversidade no registo fóssil angolano é o Cretácico, com mais de 80% do total dos táxones fósseis conhecidos, especialmente moluscos marinhos, sendo estes na sua maioria
amonites. Os vertebrados representam cerca de 15% da fauna conhecida e cerca de um décimo destes são espécies descritas pela primeira vez com base em espécimes de Angola.

Mateus, O., Callapez P. M., & Puértolas-Pascual E. (2017).  The oldest Crocodylia? a new eusuchian from the Late Cretaceous (Cenomanian) of Portugal. Journal of Vertebrate Paleontology, Program and Abstracts. 2017, 160. Abstract
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Mateus, O. (2009).  Dinolourinhã – a integração dos jovens na paleontologia: o caso-estudo do Museu da Lourinhã.. Journal of Paleontological Techniques. 28–29., 1 Abstract
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Milan, J., & Mateus O. (2005).   Jagten på Europas største dinosaur. Naturens Verden. 88(10), 2-13. Abstract
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Milàn, J., Mateus O., Mau M., Rudra A., Sanei H., & Clemmensen L. B. (2021).  A possible phytosaurian (Archosauria, Pseudosuchia) coprolite from the Late Triassic Fleming Fjord Group of Jameson Land, central East Greenland. Bulletin of the Geological Society of Denmark. 69, 71-80. Abstractmilan_et_al_2021_coprolites_greenland_bull69-71-80.pdfWebsite

A large, well-preserved vertebrate coprolite was found in a lacustrine sediment in the Malmros Klint Formation of the Late Triassic Fleming Fjord Group in the Jameson Land Basin, central East Greenland. The size and internal and external morphology of the coprolite is consistent with that of crocodilian coprolites and one end of the coprolite exhibits evidence of post-egestion trampling. As the associated vertebrate fauna of the Fleming Fjord Group contains abundant remains of pseudosuchian phytosaurs, the coprolite is interpreted as being from a large phytosaur.

Milàn, J., & Mateus O. (2003).  Fra strandbred til museum p{\aa} syv dage: historien om et gigantisk dinosaur fodspor. Varv. 8–14., Number 2003/3 Abstract
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Milàn, J., Clemmensen L. B., Adolfssen J. S., Estrup E. J., Frobøse N., Klein N., Mateus O., & Wings O. (2012).  A preliminary report on coprolites from the Late Triassic part of the Kap Stewart Formation, Jameson Land, East Greenland. New Mexico Museum of Natural History and Science, Bulletin. 57, 203-205. Abstractmilan_et_al_2012_greenland_coprolites_triassic.pdf

The basal part of the Triassic-Jurassic (Rhaetian-Sinemurian) Kap Stewart Formation, exposed at Jameson Land, East Greenland, yields an extensive coprolite collection from black, parallel-laminated mudstone (“paper shale”), representing an open lacustrine system. Preliminary investigations show three different types of coprolites: elongated cylindrical masses, composed of irregularly wrapped layers; elongated cylindrical masses with constriction marks; and spirally-coiled specimens.

Milan, J., Christiansen P., & Mateus O. (2005).  A three-dimensionally preserved sauropod manus impression from the Upper Jurassic of Portugal: Implications for sauropod manus shape and locomotor mechanics. Kaupia. 14, 47-52. Abstractmilan_et_al_mateus_2005_-_3d_sauropod_manus_track_l_j_portugal.pdfWebsite

Sauropods were the largest animals ever to walk the earth, and evolved several specializations in their limbs in order to support their body mass. Their legs became columnar and their manual digits became reduced and encapsulated in tissue to form a single weight-bearing unit in the derived sauropods. A new three-dimensionally preserved cast of a sauropod manus, found in the Upper Jurassic Lourinhã Formation, Portugal, demonstrates not only the shape, but also the actual movements of the sauropod manus during the stride. The manus cast is 32 cm deep, and show the manus to be hoof-shaped and lacking any impressions of individual digits, except for digit I, the pollex. Well preserved striations from skin on the sides of the cast show that the manus was covered in rough, tubercular skin. The width of the manus cast is consistent from top to bottom, demonstrating that the manus was brought down and lifted vertically before any parasaggital movement of the upper limb took place.

Milàn, J., Mateus O., Marzola M., & Clemmensen L. B. (2016).  Plesiosaur remains from the Lower Jurassic part of the Kap Steward Formation, Jameson Land, East Greenland – evidence of the earliest marine incursion. 60th Annual Meeting Palaeontological Association. 91-92., Lyon, France: Palaeontological Associationmilan_et_al_2016__-_kap_stewart_fm_plesiosaur_-_palass_2016.pdf
Milan, J., & Mateus O. (2005).  Jagten på Europas største dinosaur.. Naturens Verden. 88(10), 2-13.. AbstractWebsite

[In danish. Title translation: The hunt for the biggest dinosaur in Europe]

Milàn, J., Mateus O., Marzola M., & Clemmensen L. B. (2016).  Plesiosaur remains from the Lower Jurassic part of the Kap Steward Formation, Jameson Land, East Greenland – evidence of the earliest marine incursion. 60th Annual Meeting Palaeontological Association. 91-92., Lyon, France: Palaeontological Association Abstract
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Mil\à\}n, J., Mateus O., Marzola M., & Clemmensen L. B. (2016).  Plesiosaur remains from the Lower Jurassic part of the Kap Steward Formation, Jameson Land, East Greenland \–\} evidence of the earliest marine incursion. 60th Annual Meeting Palaeontological Association. 91-92., Lyon, France Abstract
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Moreno-Azanza, M., Mateus O., Bauluz B., Coimbra R., Ezquerro L., & Núñez-Lahuerta C. (2021).  Hatching in Portugal: a new look to old eggs. XIX Encontro de Jovens Investigadores em Paleontologia. 22. Abstractmoreno-azanza_et_al_2021_eggs_ejip.pdf

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Moreno-Azanza, M., Gasca J. M., Canudo J. I., Lázaro B. B., & Mateus O. (2016).  The evolution of the ornithischian eggshell: State of the art and perspectives. Abstracts with Programs, the 2016 Annual Meeting, the Palaeontological Society of Japan. 6., Fukui, Japan Abstract
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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., Gasca J. M., Canudo J. I., Lázaro B. B., & Mateus O. (2016).  The evolution of the ornithischian eggshell: State of the art and perspectives. Abstracts with Programs, the 2016 Annual Meeting, the Palaeontological Society of Japan. 6., Fukui, Japanmoreno_azanza_et_al_2016_the_evolution_of_the_ornithischian_eggshell.pdf
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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Moreno-Azanza, M., Gasca J. M., Canudo J. I., L\áżaro B. B., & Mateus O. (2016).  The evolution of the ornithischian eggshell: State of the art and perspectives. Abstracts with Programs, the 2016 Annual Meeting, the Palaeontological Society of Japan. 6., Fukui, Japan Abstract
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Moreno-Azanza, M., Ezquerro L., Gasca J. M., Díaz-Berenguer E., Nuñez-Lahuerta C., Pérez-Pueyo M., Puértolas-Pascual E., Sellés A. G., Vila B., & Laita E. (2021).  Two latest Cretaceous egg localities in the external sierras (Southern Pyrenees, Huesca Province, NE Spain). Palaeovertebrata - XVIII annual conference of the European Association of Vertebrate Palaeontologists. 44, 120-121. Abstractmoreno-azanza_et_al_2021_eggs_eavp_abstract.pdf

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Moreno-Azanza, M., Gasca J. M., Canudo J. I., Lázaro B. B., & Mateus O. (2016).  The evolution of the ornithischian eggshell: State of the art and perspectives. : Palaeontological Society of Japan Abstract
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Muchagata, J., & Mateus O. (2016).  Sexual display and rostral variation in extinct beaked whale, Globicetus hiberus. XIV EAVP Meeting. 136., Haarlem, The Netherlands: XIV EAVP Meeting, Programme and Abstract Book Abstract
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Muchagata, J., & Mateus O. (2016).  Sexual display and rostral variation in extinct beaked whale, Globicetus hiberus. XIV EAVP Meeting. 136., Haarlem, The Netherlands Abstract
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Muchagata, J., Mateus O., & Prieto R. (2018).  Treasures from the depths: first record of Tusciziphius (fossil beaked whale) from the Azores islands deep waters and the importance of local communities to science. XVI Annual Meeting of the European Association of Vertebrate Palaeontologists. 132., Caparica, Portugal June 26th-July 1st, 2018 Abstractmuchagata_et_al_2018_eavp_abstract.pdf

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Muchagata, J., & Mateus O. (2016).  Sexual display and rostral variation in extinct beaked whale, Globicetus hiberus. XIV EAVP Meeting. 136., Haarlem, The Netherlands: XIV EAVP Meeting, Programme and Abstract Book Abstractmuchagata_et_al_2016_eavp_abstractbook_finalversionjjl_26062016-1.pdf

Iberian extinct ziphiid, Globicetus hiberus, bears a peculiar large bony sphere in the rostrum, the Mesorostral Process of the Premaxillae or MPP. The MPP varies in size and shape of growth in the six specimens studied and seems to have an allometrically growth in one subgroup, but not in the other, suggesting subgroups correspond to males and females (sexual dimorphism). Even more, some rostral structures, such as the medial pad of the premaxillae seem to be associated with the specimens with lower and leaner MPP’s and ossification of the mesorostral canal by the vomer can also be of value in differentiating sex. Beaked whales are deep-diving, echolocation-user odontocetes and able to perceive bones as distinctive echoic images with their sonar; therefore the MPP may work as a secondary sexual organ (“antlers inside” hypothesis by Gol´din, 2014), a mute display structure acting as an “acoustic flag” to be perceived through echolocation by other individuals, giving information about the shape and size of the MPP.