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Re: Campbell's even crazier than a MANIAC? (archeopter
Sim Koning wrote:
What I noticed was that these animals were "flapping". By this I mean
they were providing a small amount of thrust by undulating their tail
up and down. Here is clear example of the most advanced gliding mammal
in the world using a primitive form of flapping thrust.
I'll have to look back at the videos in some detail, but I'm fairly
certain that the undulations in question are a stabilization effect,
and do not produce thrust.
I also wanted to ask, do animals that live in heavily forested areas
fossilize easily? If not, this could explain why the major groups of
flying animals seem to "pop up out of nowhere". Their ancestors could
have lived in thick jungles where animals would rapidly decompose and
be consumed by predators.
The taphonomy of forests can be complicated - some forests have left
extensive fossil remains, but many do not. So yes, there could very
well be a sampling bias related to taphonomy.
Michael Habib, M.S.
Center for Functional Anatomy and Evolution
Johns Hopkins School of Medicine
1830 E. Monument Street
Baltimore, MD 21205
(443) 280 0181