Shop Forum More Submit  Join Login
Mirischia asymmetrica by Eoscorpiidae Mirischia asymmetrica by Eoscorpiidae
Mirischia was a small (2-meter-long) genus of compsognathid dinosaur from the Albian stage (Early Cretaceous period) of Brazil. Though presently known only from a pelvis and incomplete hind limbs, it preserves enough information to show that it should be recognized as a distinct species. Phylogenetic studies incorporating this specimen have agreed that it is a compsognathid closely related to Compsognathus from the Upper Jurassic of Europe and Aristosuchus from the Lower Cretaceous of England.

Mirischia is notable for having asymmetrical ischia. Quoting from 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 originally preserved some soft tissue remains: what appears to have been an air sac was preserved between its pubic and ischial bones. Previous workers had suggested that non-avian theropods might - like birds - possess post-cranial air sacs, and Mirischia seems to confirm that.

"Mir": Latin for wonderful; "ischia": Greek, pertaining to the whole pelvis, and not the ischia alone. "asymmetrica": From its asymmetrical ischia.

Original belongs to :iconfelipe-elias:.

:rip:Please comment and :+fav: the original, here [link]:rip:
The owner of this deviation has disabled comments.
×




Details

Submitted on
November 10, 2007
Image Size
219 KB
Resolution
690×430
Link
Thumb

Stats

Views
1,428
Favourites
7 (who?)
Comments
Disabled
Downloads
11