Publications

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2007
Polcyn, M. W., Jacobs L. L., Schulp A. S., & Mateus O. (2007).  Morphology and systematic position of Angolasaurus bocagei and the evolution of the braincase in Plioplatecarpine mosasaurs. (Sternberg, Museum, Ed.).Second Mosasaur Meeting. 20., Hays, Kansas Abstract
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Polcyn, M. W., Jacobs L. L., Schulp A. S., & Mateus O. (2007).  Morphology and systematic position of Angolasaurus bocagei and the evolution of the braincase in Plioplatecarpine mosasaurs. Second Mosasaur Meeting. 20–20., Hays, Kansas Abstract
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Polcyn, M. W., Jacobs L. L., Schulp A. S., & Mateus O. (2007).  The mosasaurs of Angola. Second Mosasaur Meeting. 21., Hays, Kansas: Sternberg Museum Abstract

Although occurrences of marine reptiles have been previously reported from Angola, with the exception of two Turonian taxa, these reports were based largely on isolated teeth. Fieldwork in 2005 and 2006 yielded well-preserved remains of marine reptiles including plesiosaurs, turtles, and mosasaurs. The mosasaurs discussed here were recovered from two field areas: Turonian sediments at Iembe along the north coast and Maastrichtian sediments at Bentiaba on the south coast. The Turonian section near Iembe produced at least two new specimens of Angolasaurus bocagei and one fragmentary specimen of Tylosaurus iembeensis. One of the Angolasaurus specimens is represented by a well preserved, complete and articulated skull and partial postcrania, including portions of the forelimbs and pectoral girdle. The preservation of material from the Bentiaba locality is remarkable due to the grain support of the entombing sandstone, which preserves fine anatomical details with little apparent crushing, and in the number of articulated, semi-articulated, and associated skeletons. Identifications from the field and preliminary preparation show the Bentiaba mosasaur fauna is represented by at least five genera including Mosasaurus, Prognathodon, Globidens, Plioplatecarpus and Halisaurus. Collectively, these new specimens greatly expand our knowledge of the anatomy and systematics of Angolan mosasaurs.

Polcyn, M. W., Jacobs L. L., Schulp A. S., & Mateus O. (2007).  The mosasaurs of Angola. (Sternberg, Museum, Ed.).Second Mosasaur Meeting. 21., Hays, Kansas Abstract
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Polcyn, M. W., Jacobs L. L., Schulp A. S., & Mateus O. (2007).  The mosasaurs of Angola. Second Mosasaur Meeting. 21–21., Hays, Kansas Abstract
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2006
Mateus, O., Morais M., Schulp A., Jacobs L., & Polcyn M. (2006).  The Cretaceous of Angola. JOURNAL OF VERTEBRATE PALEONTOLOGY. 26, 96A-97A., Jan Abstractmateus_et_al_2006_svp_abstracts_cretaceous_fo_angola.pdf

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Schulp, A., Mateus O., Polcyn M., & Jacobs L. (2006).  A new Prognathodon (Squamata : Mosasauridae) from the Cretaceous of Angola. JOURNAL OF VERTEBRATE PALEONTOLOGY. 26, 122A-122A., Jan Abstractschulp_et_al_2006.pdf

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Schulp, A. S., Polcyn M. J., Mateus O., Jacobs L. L., Morais L. M., & Tavares T. S. (2006).  New mosasaur material from the Maastrichtian of Angola, with notes on the phylogeny, distribution and palaeoecology of the genus Prognathodon. Publicaties van het Natuurhistorisch Genootschap in Limburg Reeks XLV aflevering 1. Stichting Natuurpublicaties Limburg, Maastricht . 57-67 .schulp_polcyn_mateus_jacobs_et_al_2006_new_mosasaur_material_from_the_maastrichtian_of_angola_with_notes_on_the_phylogeny_distribution_and_palaeoecology_of_the_genus_prognathodon.pdf
Jacobs, L. L., Mateus O., Polcyn M. J., Schulp A. S., Antunes M. T., Morais M. L., & da Silva Tavares T. (2006).  The occurrence and geological setting of Cretaceous dinosaurs, mosasaurs, plesiosaurs, and turtles from Angola. Paleont. Soc. Korea. 22(1), 91-110. Abstractjacobs_mateus-et_al_2006_angola.pdf

Vertebrate-bearing fossiliferous outcrops of Cretaceous age in sub-Saharan Africa are rare because of younger superficial deposits, vegetation cover, and the widespread occurrence of Precambrian metamorphic plateau basement comprising much of the continent. However, one area of extensive marine and nonmarine
Cretaceous exposures is found between the plateau and the coast in Angola. The Angolan margin was formed in conjunction with the breakup of Gondwana and subsequent growth of the South Atlantic. Cretaceous deposits are constrained in age by the emplacement of oceanic crust, which began no later than magnetozone M3
(approximately 128 Ma, Barremian). Shallow marine facies are exposed in sea cliffs but equivalent facies become increasingly terrestrial inland. Few vertebrate fossils have been described from Angola aside from sharks.
Notable exceptions are the late Turonian mosasaurs Angolasaurus bocagei and Tylosaurus iembeensis from northern Angola. Those taxa are significant because they are among the earliest derived mosasaurs. Recent field work led to the discovery of a new skull of Angolasaursus as well as sharks, fish, plesiosaurs, the skull of a new taxon of turtle, additional mosasaurs, and the articulated forelimb of a sauropod dinosaur, the first reported dinosaur from Angola. In southern Angola, marine sediments spanning the Cretaceous-Paleogene boundary are found.

Mateus, O., Morais M. L., Schulp A. S., Jacobs L. L., & Polcyn M. J. (2006).  The Cretaceous of Angola. Journal of Vertebrate Paleontology. 26, 96-97., Number (Suppl. To 3) Abstract
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Mateus, O., Morais M. L., Schulp A. S., Jacobs L. L., & Polcyn M. J. (2006).  The Cretaceous of Angola. Journal of Vertebrate Paleontology. 26, 96–97., Number (Suppl. T Abstract
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Schulp, A. S., Polcyn M. J., Mateus O., Jacobs L. L., Morais M. L., & Tavares T. S. (2006).  New mosasaur material from the Maastrichtian of Angola, with notes on the phylogeny, distribution and palaeoecology of the genus Prognathodon. Publicaties van het Natuurhistorisch Genootschap in Limburg Reeks XLV aflevering 1. Stichting Natuurpublicaties Limburg, Maastricht. 57-67. Abstract
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Jacobs, L. L., Mateus O., Polcyn M. J., Schulp A. S., Antunes M. T., Morais M. L., & Tavares T. S. (2006).  The occurrence and geological setting of Cretaceous dinosaurs, mosasaurs, plesiosaurs, and turtles from Angola. Journal of the Paleontological Society of Korea. 22, , Number 1 Abstract
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Jacobs, L. L., Mateus O., Polcyn M. J., Schulp A. S., Antunes M. T., Morais M. L., & da Silva Tavares T. (2006).  The occurrence and geological setting of Cretaceous dinosaurs, mosasaurs, plesiosaurs, and turtles from Angola. JOURNAL-PALEONTOLOGICAL SOCIETY OF KOREA. 22, 91–91., Number 1 Abstract
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Jacobs, L. L., Morais M. L., Schulp A. S., Mateus O., & Polcyn M. J. (2006).  Systematic Position and Geological Context of Angolasaurus (Mosasauridae) and a New Sea Turtle from the Cretaceous of Angola. Journal of Vertebrate Paleontology, 26 (Suppl. To 3). 81. Abstract
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1999
Allain, R., Taquet P., Battail B., Dejax J., Richir P., Veran M., Limon-Duparcmeur F., Vacant R., Mateus O., Sayarath P., Khenthavong B., & Phouyavong S. (1999).  Un nouveau genre de dinosaure sauropode de la formation des Gres superieurs (Aptien-Albien) du Laos. Comptes Rendus de l'Academie des Sciences - Series IIA - Earth and Planetary Science. 329, 609-616., oct, Number 8 Abstractallain_taquet_battail_dejax_richir_mateus_et_al_1999_un_nouveau_genre_de_dinosaure_sauropode_de_la_formation_des_gres_superieurs_aptien-albien_du_laos.pdfWebsite

The partly-articulated postcranial remains of two sauropod skeletons recently found in Tang Vay (Savannakhet Province, Laos) are assigned to the species Tangvayosaurus hoffeti (nov. gen., nov. sp.). The derived characters present in the new material confirm the presence of titanosaurs in South East Asia at the end of the Early Cretaceous, but are not consistent with its placement within Titanosaurus genus as first done by Hoffet in 1942. All of the material relative to this species is therefore referred to a new genus: Tangvayosaurus. Tangvayosaurus and the Thai genus Phuwiangosaurus have strong affinities and are considered as primitive titanosaurs.

Allain, R., Taquet P., Battail B., Dejax J., Richir P., Véran M., Limon-Duparcmeur F., Vacant R., Mateus O., Sayarath P., Khenthavong B., & Phouyavong S. (1999).  Un nouveau genre de dinosaure sauropode de la formation des Grès supérieurs (Aptien-Albien) du Laos. Comptes Rendus de l{\textquotesingle}Académie des Sciences - Series {IIA} - Earth and Planetary Science. 329, 609–616., oct, Number 8: Elsevier {BV} AbstractWebsite
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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. (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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