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Re: Fwd: possible role of echolocation in K-T survival
At 07:16 PM 3/13/98 -0600, Rob Meyerson wrote:
>Stanley Friesen writes,
>>So, do any of the soft-tissue outlines of ichthyosaurs show
>>evidence of a "melon" or other enlarged fatty organ anywhere near
>>the front of the animal? If so, then they probably echolocated.
>However, this assumes that a melon is required for echolocation.
Nope. It assumes a melon is positive indication of echolocation. Note I
never say *absence* of a melon indicates they *didn't* echolocate. I only
assert melon=>echolocation, not melon<=>echolocation
>Bats echolocate just fine using only their ears, which would
>suggest that there are multiple ways of making echolocation
>Admittedly, there could be differences in echolocation
>strategies/requirements for air and water.
I suspect that this is the case, however.
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