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Re: Russian Dinosaurs in T.O.: Longisquama
IMHO display either for mating or for threatening of potential predators is
probably the best interpretation for the elongate appendages of Longisquama.
And another question. Sorry, what were these structures supposed to be
used for? They seem spaced a bit far apart to me much use for
gliding/parachuting. How about for display?
On the other hand parachuting might be feasible. The fluffy tail of
squirrels helps when they accidentally fall from branches even if has is
probably not evolved for that task.
Haubold and Buffetaut (1987) proposed that Longisquama was able to
spread out the plume-like appendages at its sides forming a sort of gliding
"wing" like in kueheneosaurid/coelurosauravid/ Draco. This gliding
apparatus would perhaps have been uneffective, I suspect, owing to the
lack of a continuous surface. Thus I prefer to stick to the display.
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