Octávio Mateus (born 1975) is a Portuguese dinosaur paleontologist and biologist Professor of Paleontology at the Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa. He graduated in Universidade de Évora and received his PhD at Universidade Nova de Lisboa in 2005. He collaborates with Museu da Lourinhã, known for their dinosaur collection.
He has named new dinosaur species such as Lourinhanosaurus antunesi (1998), Dinheirosaurus lourinhanensis, Tangvayosaurus hoffeti (1999), Draconyx loureiroi (2001), Lusotitan atalaiensis (2003), Europasaurus holgeri (2006), and Allosaurus europaeus (2006), Torvosaurus gurneyi Hendrickx & Mateus, 2014, and Galeamopus (2015).
Since 1991 Octávio Mateus has organized dinosaur excavations in Portugal, as well as excavating in Laos (Asian Southeast) with the French team of the Paris Museum of Natural History, led by Prof. Philippe Taquet. He has recently worked in Angola, where he discovered the first Angolan dinosaur in the scope of a project in the area of vertebrate paleontology of Angola. He collaborates with diverse international scientific institutions as the scientific council member of the German foundation Verein zur Förderung der niedersächsischen Paläontologie. He also studied dinosaur tracks and eggs, phytosaurs, chelonians, and whales. In 2012 he integrated an expedition to the Triassic of Greenland in Jameson Land.
- Mateus O (1998). "Lourinhanosaurus antunesi, a new Upper Jurassic allosauroid (Dinosauria: Theropoda) from Lourinhã (Portugal)" (PDF). Memórias da Academia de Ciências de Lisboa 37: 111–124.
- Bonaparte, J.F., & Mateus, O. (1999). "A new diplodocid, Dinheirosaurus lourinhanensis gen. et sp. nov., from the Late Jurassic beds of Portugal". Revista del Museo Argentino de Ciencias Naturales (2): 13–29.CS1 maint: Multiple names: authors list (link) PDF Document Archived 2007-09-28 at the Wayback Machine
- Hendrickx, C; Mateus, O (2014). "Torvosaurus gurneyi n. sp., the Largest Terrestrial Predator from Europe, and a Proposed Terminology of the Maxilla Anatomy in Nonavian Theropods". PLoS ONE. 9 (3): e88905. doi:10.1371/journal.pone.0088905. PMC 3943790. PMID 24598585.
- Tschopp, E.; Mateus, O. V.; Benson, R. B. J. (2015). "A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda)". PeerJ. 3: e857. doi:10.7717/peerj.857. PMC 4393826. PMID 25870766.
- Huffington Post - Angolatitan Adamastor: New Dinosaur, 'Angolan Giant,' Discovered
- Milàn, 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.