17 research outputs found
New insights into the anatomy and systematic of âPapoulemysâ laurenti, a representative of Neochelys (Chelonii, Podocnemididae) from the early Eocene of the south of France
Systematic study of the historical material of Upper Cretaceous reptiles from the Tremp Basin (Catalonia, Spain) housed at the Museo Nacional de Ciencias Naturales (Madrid)
The oldest turtle from Portugal corresponding to the only pre-Kimmeridgian plesiochelyid (basal Eucryptodira) recognized at the generic level
Swimming reptile prints from the Keuper facies (Carnian, Upper Triassic) of Los Gallegos new tracksite (Iberian Range, Valencia province, Spain)
First nonavian dinosaur from Lebanon: a brachiosaurid sauropod from the Lower Cretaceous of the Jezzine District
The tracks of giant theropods (<i>Jurabrontes curtedulensis</i> ichnogen. & ichnosp. nov.) from the Late Jurassic of NW Switzerland: palaeoecological & palaeogeographical implications
<p><i>Jurabrontes curtedulensis</i>, a new ichnogenus and species of Late Jurassic giant theropod dinosaur track is described based on very well-preserved and morphologically-distinct tracks, all carefully excavated along federal highway A16 (Canton Jura, NW Switzerland). All trackways were systematically documented including parameter measurements, descriptions, outline drawings, orthophotos and laserscans. <i>Jurabrontes</i> is characterised by sub-equal track length and width, a small anterior triangle, weak mesaxony, three blunt digits (dII-III-IV) with pronounced (sub)triangular claw marks, a rounded heel, and clear phalangeal pad impressions. The combination of features of <i>Jurabrontes</i> is typical for a theropod (and not ornithopod) trackmaker. <i>Jurabrontes</i> is compared to other similar ichnotaxa and unnamed tracks of large theropods from the Early Jurassic to Late Cretaceous, from which it is clearly different. The sheer size of the largest tracks, that are amongst the largest worldwide and of similar size to <i>Tyrannosauripus</i> from the Late Cretaceous, suggests a âmegalosauridâ or large allosaurid theropod as a trackmaker. The presence of such large theropod tracks in tidal-flat deposits of the Jura carbonate platform and associated with small to large sauropod tracks has important palaeoecological implications for the dinosaur community and for palaeoenvironmental and palaeogeographical reconstructions.</p> <p><i>Jurabrontes</i> - <a href="http://urn:lsid:zoobank.org:act:B482D2AF-637A-4B2D-8B0B-FEAD54CA2A26" target="_blank">urn:lsid:zoobank.org:act:B482D2AF-637A-4B2D-8B0B-FEAD54CA2A26</a></p> <p><i>J. curtedulensis</i>- <a href="http://urn:lsid:zoobank.org:act:30D45944-5A2B-45E1-89B9-20298E475D51" target="_blank">urn:lsid:zoobank.org:act:30D45944-5A2B-45E1-89B9-20298E475D51</a></p