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S. Pickering wrote:
Hovering is energy costly, constraining the size of
the animal involved. Thus, it seems doubtful to me
that hovering among pterosaurs and pre-K/T feathered
I can say nothing about hovering abilities. But I would like to ask the
following ?related question.
There is one anurognathid with an enormously wide sternal complex and
six elongated anterior dorsal ribs to brace it -- together with
remarkably slender wing bones.
There is another anurognathid with a very small sternal complex, only
one set of dorsal ribs to brace it and remarkably robust wing bones.
Wing spans are comparable.
What can we deduce from such differences?