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Re: Practical work experience?

----- Original Message ----- From: "T. Michael Keesey" <keesey@gmail.com>
Sent: Thursday, June 14, 2007 7:33 PM

On 6/13/07, David Marjanovic <david.marjanovic@gmx.at> wrote: 

So electroreception is the normal condition for tetrapods, and lost in
terrestrial life stages and clades! Thank you for having pointed me at
Klembara's work. :-)


That is interesting. How does electroreception in platypuses fit into
this? (Is it plesiomorphic or did it arise de novo? Or a bit of both?)

It's probably de novo, but I don't know anything specific about platypus electroreception.

Are there other amniotes with electroreception?

Not that I know of. Of course, that may simply mean nobody has looked for it, but it's useless in terrestrial animals and should be expected to be lost.