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Mocho P.,Autonomous University of Madrid | Mocho P.,Laboratorio Of Paleontologia E Paleoecologia | Royo-Torres R.,Fundacion Conjunto Paleontologico de Teruel Dinopolis | Ortega F.,Laboratorio Of Paleontologia E Paleoecologia | Ortega F.,Spanish University for Distance Education (UNED)
Zoological Journal of the Linnean Society | Year: 2014

Lourinhasaurus alenquerensis is a Portuguese Upper Jurassic dinosaur whose lectotype is one of the most complete sauropod specimens from the Portuguese fossil record and from the Upper Jurassic of Europe. It was recovered from sediments of the Sobral Formation (upper Kimmeridgian to lower Tithonian) at Moinho do Carmo (Alenquer, Portugal). The lectotype of Lourinhasaurus was first related to Apatosaurus and then tentatively related to Camarasaurus. Finally, it was established as a new taxon, Lourinhasaurus, including the Moinho do Carmo specimen. At the time of writing, Lourinhasaurus had a poor diagnosis and an unstable phylogenetic position. Revision of the Moinho do Carmo specimen has led to a detailed description and a new and more complete codification for several morphological characters. The phylogenetic analyses proposed herein considered Lourinhasaurus as a Camarasauromorpha Macronaria. This study also recovered a Camarasauridae clade incorporating Lourinhasaurus, Camarasaurus and, putatively, Tehuelchesaurus and that implies the presence of Camarasauridae in the European Upper Jurassic. Besides the strong similarity to Camarasaurus, Lourinhasaurus alenquerensis is here considered a valid taxon with 13 putative autapomorphies such as a sagittal keel on the dorsal margin of sacral neural spines, circular and deep spinoprezygapophyseal fossa on proximal caudal vertebrae, marked crest and groove bordering the lateral margin of the acetabulum in the ischium, and a marked deflection of the entire femoral shaft without lateral bulge. The apparently high number of taxa among the sauropod fauna from the Iberian Peninsula during the Late Jurassic is similar to the palaeobiodiversity recorded in formations of the same age, i.e. Morrison and Tendaguru, and does not support the hypothesis of a connection between the North America and Iberian Peninsula faunas during the later part of the Late Jurassic reflected by other faunal and floral groups. © 2014 The Linnean Society of London. Source


Perez-Garcia A.,Laboratorio Of Paleontologia E Paleoecologia | Ortega F.,Laboratorio Of Paleontologia E Paleoecologia | Ortega F.,Spanish University for Distance Education (UNED)
Journal of Vertebrate Paleontology | Year: 2011

A new pleurosternid turtle from the Upper Jurassic of the Central West of Portugal is described. Pleurosternids are abundant in the European and American Upper Jurassic and Lower Cretaceous fossil record. Despite this, at present, there is no reference to any genus of pleurosternids before the upper Tithonian in Europe. Selenemys lusitanica, gen. et sp. nov., represented by several specimens from the upper Kimmeridgian of the Lusitanian Basin (Portugal), constitutes the most ancient generic attribution to a pleurosternid turtle in Europe. A cladistic analysis shows that Selenemys is more closely related to the European Lower Cretaceous pleurosternids than to the Jurassic North American representatives of this group. This is interpreted as a vicariant biogeographical distribution of the group on both sides of the North Atlantic during the Uppermost Jurassic, in contrast to that observed in other groups of reptiles. © 2011 by the Society of Vertebrate Paleontology. Source


Mocho P.,Spanish University for Distance Education (UNED) | Mocho P.,Laboratorio Of Paleontologia E Paleoecologia | Mocho P.,Autonomous University of Madrid | Royo-Torres R.,Fundacion Conjunto Paleontologico de Teruel Dinopolis Museo Aragones de Paleontologia | And 6 more authors.
Historical Biology | Year: 2016

The Upper Jurassic’s central and northern sectors of the Bombarral Sub-basin are relatively poor in sauropod material, highlighting the specimens (mainly teeth) found in the Guimarota mine (Leiria) and the Andrés (Pombal) fossil site. The study of published and the unpublished sauropod material allows for a revision of the present state of sauropod diversity of the Bombarral Sub-basin. These new specimens come from Pombal, Leiria, Batalha, Porto de Mós, Alcobaça and Caldas da Rainha, and include an almost complete posterior or middle dorsal neural spine and a partial caudal series. The systematic re-evaluation of the sauropod record of this sector indicates the presence of turiasaurs, diplodocines, titanosauriforms and an indeterminate eusauropod form. During the last part of the twentieth century, the discovery of fossil vertebrates has increased significantly in the sediments cropping out in the central and northern sectors of the Bombarral Sub-basin (Alcobaça and Bombarral Formations), improving our understanding of the Late Jurassic faunas of the Lusitanian Basin. © 2016 Taylor & Francis Source


Mocho P.,Autonomous University of Madrid | Mocho P.,Laboratorio Of Paleontologia E Paleoecologia | Mocho P.,Spanish University for Distance Education (UNED) | Royo-Torres R.,Fundacion Conjunto Paleontologico de Teruel Dinopolis Museo Aragones de Paleontologia | And 7 more authors.
Historical Biology | Year: 2016

Turiasauria is a clade of eusauropods with a wide stratigraphic range that could extend from the Bathonian to the lower Aptian including Turiasaurus, Losillasaurus, Zby and putatively, Galveosaurus, Atlasaurus and isolated remains from Middle Jurassic-to-Lower Cretaceous. Some are characterised by the presence of heart-shaped teeth. Several tooth occurrences from the Portuguese Upper Jurassic with this type of morphology (SI: 1.1–1.8) are reported and discussed. If this morphology is regarded as synapomorphic of Turiasauria, the teeth will be tentatively related to this clade. From a sample of 43 teeth, three main morphotypes are described. Three hypotheses might explain the morphological variation: (1) the range of tooth morphologies indicates variation in the jaw, (2) the range of tooth morphologies indicates taxonomic variation or (3) a combination of both. The general wear pattern in morphotypes I and II starts with a distal facet, then the appearance of mesial/apical facet and finally a ‘V’-shaped facet. In morphotype III, the wear begins with a mesial facet. The variability observed for Portuguese Upper Jurassic specimens is congruent with the morphological variability along the tooth row shown by other sauropods with spatulate/spoon-shaped teeth and it is considered the most parsimonious hypothesis to explain it. © 2015 Taylor & Francis. Source


Escaso F.,Spanish University for Distance Education (UNED) | Escaso F.,Laboratorio Of Paleontologia E Paleoecologia | Ortega F.,Spanish University for Distance Education (UNED) | Ortega F.,Laboratorio Of Paleontologia E Paleoecologia | And 9 more authors.
Journal of Vertebrate Paleontology | Year: 2014

A new dryosaurid ornithopod, Eousdryosaurus nanohallucis, gen. et sp. nov., is described here based on a single specimen from the Late Jurassic Alcobaça Formation of Portugal. Eousdryosaurus nanohallucis is distinguished from all other dryosaurids by eight autapomorphic features and an unique combination of characters, some of which are also shared by other dryosaurids. Eousdryosaurus is linked with Dryosauridae, because the fourth trochanter is proximally placed and widely separated from the scar for the insertion of the M. caudifemoralis longus, which is restricted to the medial surface of the femoral shaft. Phylogenetic analysis nests Eousdryosaurus in an unresolved polytomy at the base of Dryosauridae together with Callovosaurus, Dryosaurus, and Kangnasaurus. The complete pes of Eousdryosaurus, which has a phalangeal formula of 1-3-4-5-0, supports the putative autapomorphic reduction of the dryosaurid pes that also occurs in parallel in more derived ornithopods.SUPPLEMENTAL DATA-Supplemental materials are available for this article for free at www.tandfonline.com/UJVP © 2014 by the Society of Vertebrate Paleontology. Source

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