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scapula question

David Peters wrote:

On various lizard skeletons you see what appears to be a "second story" addition to the scapula. Now is this a less-ossified portion of the original scapula? Or is it a novel extension of the the original scapula? And finally, do we see it anywhere else but among the squamates?

A suprascapula has been reported for the hypsilophodont-grade ornithopod _Parksosaurus_. This element is ossified and separate from the scapula.

According to Jain and Bandyopadhay (1997), _Antarctosaurus septentrionalis_ also has a suprascapula. In this case, this element is said to be coossified with the scapula, and gives the impression that the scapula is longer than it actually is.