title: New evidence of shared dinosaur across Upper Jurassic Proto-North Atlantic: Stegosaurus from Portugal.
abstract: More than one century after its original description by Marsh in 1877, we report in this paper the first uncontroversial evidence of a member of the genus Stegosaurus out of North America. The specimen consists of a partial skeleton from the Upper Jurassic of Portugal, herein considered as Stegosaurus cf. ungulatus. The presence of this plated dinosaur in the upper Kimmeridgian-lower Tithonian Portuguese record and synchronic levels of the Morrison Formation of North America reinforces previous hypothesis of a close relationship between these two areas during the Late Jurassic. This relationship is also supported by geotectonic evidences indicating high probability of an episodic corridor between the Newfoundland and Iberian landmasses. Together, Portuguese Stegosaurus discovery and geotectonic inferences could provide a scenario with episodical faunal contact among North Atlantic landmasses during the uppermost Kimmeridgian-lowermost Tithonian (ca. 148-153 Ma ago).
authors.affiliation: Facultad de Ciencias, Departamento de Biología, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain. fernando.escaso@unam.es
authors.forename: Fernando
authors.initials: F
authors.lastname: Escaso
authors.forename: Francisco
authors.initials: F
authors.lastname: Ortega
authors.forename: Pedro
authors.initials: P
authors.lastname: Dantas
authors.forename: Elisabete
authors.initials: E
authors.lastname: Malafaia
authors.forename: Nuno L
authors.initials: NL
authors.lastname: Pimentel
authors.forename: Xabier
authors.initials: X
authors.lastname: Pereda-Suberbiola
authors.forename: José Luis
authors.initials: JL
authors.lastname: Sanz
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Kullberg
authors.forename: María Carla
authors.initials: MC
authors.lastname: Kullberg
authors.forename: Fernando
authors.initials: F
authors.lastname: Barriga
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D025061:Dinosaurs / Q000033:anatomy & histology / Q000145:classification; D005580:Fossils; D010802:Phylogeny; D011174:Portugal