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Re: possible role of echolocation in K-T survival
> >isn't echolocating similar in principle to sonar? The medium is
> >different, and the reception of sound is through different body parts
> >(ears vs. melon), but isn't the principle of issuing sound to recieve
> >sound wave bounces the same?
> >Could ichthyosaurs have used sonar?
> Possible - except that many ichthyosaurs had enormous eyes, if the size of
> the orbits is any indication. Most living echolocators tend not to
> emphasize visual integration.
Sperm whales have the largest extant eyes I know of, and they use
sonar. Not quite the proportions of an Ichthyosaur however.
Would something like a melon be traceable in the fossil record? Would
it be possible to have a non-mammalian melon?