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New Mongolian dromaeosaurid
I don't remember this having been mentioned on the list to date...
Turner, A. H., S. H. Hwang & M. A. Norell, 2007, A small derived theropod
from Öösh, Early Cretaceous, Baykhangor Mongolia. American Museum Novitates
3557, 27 pp.
Abstract: A new theropod dinosaur, *Shanag ashile*, from the Early
Cretaceous Öösh deposits of Mongolia is described here. The new specimen (IGM
100/1119) comprises a well-preserved right maxilla, dentary, and partial
This specimen exhibits a number of derived theropod features, including a
triangular anteriorly tapering maxilla, a large antorbital fossa, and
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
comprehensive phylogenetic analysis including 58 theropod taxa unambiguously
depicts the new Öösh 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.
discovery of IGM 100/1119 expands our knowledge of Early Cretaceous
dromaeosaurids and the faunal similarity between the Öösh and the Jehol biotas.
I have the pdf if needed, but I suppose this will sooner or later appear in
free access on the AMNH website, if it's not already there...
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