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Re: a lot of fog (halkieriids)
On Fri, 15 Feb 2002 02:49:25
Ken Kinman wrote:
> I suppose Conway Morris' idea is sort of appealing in a "ontogeny
>recapitulates phylogeny" sort of way. About 6-7 years ago, I spent several
>months (in my spare time) reviewing the pertinent literature, and concluded
>this was a case of brachiopod larval characteristics being paedomorphically
>held over into the halkieriid adult stage.
Okay, fine. I think both ideas are parsimonious. But, why exactly a
paedomorphic change? Why not a peramorphic change like that seen in juvenile
_Neocrania_? I'm curious to see what evidence you gathered from the literature
(you can post it to the list or send it to me offlist when convenient...I know
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