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RE: Sinocalliopteryx (Theropoda: Compsognathidae) ate confuciusornithids and dromaeosaurids

From: Ben Creisler

One possible clue to flying ability, of course, would be the
development and shape of the brain--see the link below. Unfortunately,
as far as I recall, most if not all the known fossils of
Confuciusornis and Microraptor, as well as many other birds and
dromaeosaurs from China, were found in a crushed condition that makes
detailed and accurate 3-D study of the shape of the braincase
difficult if not impossible. Are there any specimens of Confuciusornis
or other Chinese Mesozoic birds/dromaeosaurids from Liaoning that are
not flattened on a slab?