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Ten new track-bearing boulders discovered in the Parco Naturale delle Dolomiti Friulane area (Carnic Prealps, NE Italy) during the last 15 years demonstrate that bipedal dinosaurs with a functionally tridactyl, digitigrade pes, within the size-class of the ichnogenus Anchisauripus Lull, 1904, were the most common trackmakers in the carbonate tidal flats of the Dolomia Principale during the latest Triassic. If the footprint morphology actually reflects the functional tridactyl condition of the trackmakers' feet, theropods are the most suitable trackmakers. The ichnoassociation of the Parco delle Dolomiti Friulane area differs from coeval ichnoassociations in the dominance of mid-sized tridactyl footprints and the rarity of small tridactyl (Grallator Hitchcock, 1858; length <15 cm) and chirotheriid tracks. Tracks potentially produced by basal sauropodomorphs, which were the most common European dinosaurs in the late Norian-Rhaetian interval, are underrepresented.


The "Bonaventura Gravina" Collection of the Earth Science Museum of Catania (Italy) includes an ichthyosaur specimen of unknown geographic and stratigraphic provenance, age, and taxonomic determination. On comparison with other fossils from the same collection it was established that the specimen is from Böll, southwestern Germany; the ammonites preserved on the same slab indicate an early Toarcian age. Based on the available information it is suggested that it comes from the Early Jurassic Posidonia Shale (Posidonienschiefer), which is known worldwide for its ichthyosaur remains. A morphological comparison with Toarcian ichthyosaurs allowed the fossil remains to be referred to an adult specimen of Stenopterygius, a mid-sized ichthyosaur genus common in the Toarcian of Southern Germany. The phylogenetic analysis by parsimony supports this conclusion.


Dalla Vecchia F.M.,Institute Catala Of Paleontologia M Crusafont Icp | Riera F.M.,Autonomous University of Barcelona | Oms J.O.,Autonomous University of Barcelona | Dinares-Turell J.,Italian National Institute of Geophysics and Volcanology | And 2 more authors.
Acta Geologica Sinica | Year: 2013

Pterosaur bones are for the first time reported from the Tremp Syncline (Spain) and the southern Pyrenees. They come from the Torrebilles-2 site (Isona, Lleida Province) in the upper Maastrichtian part of the Tremp Formation, which falls within the C29r magnetochron. Fragmentary long bones are referred to the Pterosauria based on their cortical thinness, micro-architecture, and histological features. They belong to very large to possibly giant individuals. The most complete specimen is possibly a partial right femur. The review of the Maastrichtian pterosaur record shows that only a few specimens can be referred to the C29r (which contains the KTPg boundary). The identification of fragmentary remains could improve our knowledge about the abundance and distribution of these flying sauropsids just before the end-Cretaceous mass extinction. ©[2013] Geological Society of China.

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