Mirischia: Difference between revisions

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==Discovery and naming==

 

==Description==

''Mirischia'' was a small bipedal predator. Its length was in 2004 estimated at 2.1 metres.<ref name=Naish2004/> In 2010 [[Gregory S. Paul]] estimated the weight at seven kilogrammes.<ref>Paul, G.S., 2010, ''The Princeton Field Guide to Dinosaurs'', Princeton University Press p. 123</ref> The holotype of ''Mirischia'' is notable for having asymmetrical [[ischium|ischia]]. Quoting from [[Darren Naish|Naish]] et al. (2004): "The ischia of ''Mirischia'' are asymmetrical, that on the left being perforated by an oval foramen while that on the right has an open notch in the same position." The specimen is also unusual in that it preserves some soft tissue remains: apart from the intestine, what the describers interpreted to have been an air sac was preserved between its pubic and ischial bones in the form of a vacuity. Previous workers had suggested that non-avian theropods might — like birds — possess post-cranial [[air sacs]], and ''Mirischia'' seems to confirm that. Another notable trait is the exceptional thinness of the bone wall of all skeletal elements.<ref name=Naish2004/>

 

==Phylogeny==

 

==References==

{{Theropoda|O.}}

{{Taxonbar|from=Q135648}}

 

[[Category:Compsognathids]]