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Fossil bones belonging to one of the worlds largest dinosaur are discovered near Riodeva (20 km north) of Losilla de Aras, the small village that originated the Losillasaurus holotype (Casanovas et al., 2001) in the eastern province of Teruel, Spain. The scientists estimate that they are looking at a 35 meter long (115ft) sauropod similar to the Paralititan found in Egypt, weighting 50 metric tons. This dinosaur lived during the barremian-aptian Early Cretaceous period somewhere between 130 and 130 million years ago*. The bones shown included a humerus (bone extending from shoulder to elbow) 1.78m (6ft) and a claw about 30cm (1ft) long. Accoring to Mr Alcala the humerus is the largest ever found in the world, explaining that the previous record - belonging to the Paralititan - was 1.69m (more than 5.5ft) long. The site covers a surface of some 400sq m (4,306sq ft) of land cultivated over centuries, and the bones have been rebuilt from thousands of fragments picked up during the 18 months of excavations. The sauropod site is one of the seventeen known in Riodeva, with stegosaurs, theropod and sauropod remains (Royo-Torres et al., 2003), all recently discovered and still unpublished. Apart from the 178 cm long humerus and the 30 (or 35) cm long claw, remains of scapular and pelvic girdles, fore and hind limbs (including a complete manus) and vertebrae are known (Moreno, 2004).

* The age of this sauropod is controversial, it comes from continental beds overlying the Upper Jurassic marine beds, Probably it comes form the same formation (El Collado formation) that produce stegosaurs (Dacentrurus) and another sauropod (Losillasaurus) in the northermost part of the Valencia Province, and its age could be Uppermost Jurassic-Lowermost Cretaceous (Tithonian-Berriasian) or Lower Cretaceous (Barremian). Source: Jose Ignacio Ruiz-Omeñaca

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