Nowy dromeozaur z Mongolii
: 18 marca 2007, o 19:42
Oj ladny dzien dzisiaj mamy! Poznalismy 4 nowe wazne rodzaje 
Choc ta nazwa - Shanag ashil - mi bardziej pasuje jako przezwisko jekiegos boksera z Orientu
Turner, A. H., S. H. Hwang & M. A. Norell, 2007, A small derived theropod from ????sh, Early Cretaceous, Baykhangor Mongolia. American Museum Novitates 3557, 27 pp.
Abstract: A new theropod dinosaur, *Shanag ashile*, from the Early Cretaceous ????sh deposits of Mongolia is described here. The new specimen (IGM 100/1119) comprises a well-preserved right maxilla, dentary, and partial splenial. This specimen exhibits a number of derived theropod features, including a triangular anteriorly tapering maxilla, a large antorbital fossa, and maxillary participation in the caudally elongate external nares. These features resemble the Early Cretaceous dromaeosaurids *Sinornithosaurus millenii* and *Microraptor zhaoianus*, as well as the basal avialan *Archaeopteryx lithographica*. A comprehensive phylogenetic analysis including 58 theropod taxa unambiguously depicts the new ????sh theropod as a member of Dromaeosauridae. Relative to other dromaeosaurids, *Shanag ashile* is autapomorphic in its lack of a promaxillary fenestra and in the presence of interalveolar pneumatic cavities. The discovery of IGM 100/1119 expands our knowledge of Early Cretaceous dromaeosaurids and the faunal similarity between the ????sh and the Jehol biotas.
Choc ta nazwa - Shanag ashil - mi bardziej pasuje jako przezwisko jekiegos boksera z Orientu
Turner, A. H., S. H. Hwang & M. A. Norell, 2007, A small derived theropod from ????sh, Early Cretaceous, Baykhangor Mongolia. American Museum Novitates 3557, 27 pp.
Abstract: A new theropod dinosaur, *Shanag ashile*, from the Early Cretaceous ????sh deposits of Mongolia is described here. The new specimen (IGM 100/1119) comprises a well-preserved right maxilla, dentary, and partial splenial. This specimen exhibits a number of derived theropod features, including a triangular anteriorly tapering maxilla, a large antorbital fossa, and maxillary participation in the caudally elongate external nares. These features resemble the Early Cretaceous dromaeosaurids *Sinornithosaurus millenii* and *Microraptor zhaoianus*, as well as the basal avialan *Archaeopteryx lithographica*. A comprehensive phylogenetic analysis including 58 theropod taxa unambiguously depicts the new ????sh theropod as a member of Dromaeosauridae. Relative to other dromaeosaurids, *Shanag ashile* is autapomorphic in its lack of a promaxillary fenestra and in the presence of interalveolar pneumatic cavities. The discovery of IGM 100/1119 expands our knowledge of Early Cretaceous dromaeosaurids and the faunal similarity between the ????sh and the Jehol biotas.
