[Taxacom] Meliaceae (vicariance??)

[John Grehan]

Ken - dispersal and vicariance are equally important in panbiogeography
- dispersal for range expansion and maintenance, vicariance for
differentiation.

Your beliefs about the upper age of taxa are noted. They are your beliefs
(and perhaps shared by others as you note) and that is OK. But not
scientifically contestable since they are just your beliefs.

John Grehan

On Mon, Nov 18, 2019 at 9:12 AM Kenneth Kinman via Taxacom <
taxacom at mailman.nhm.ku.edu> wrote:

>        I agree that I shouldn't have used the word ignore.   Instead I
> should have said something like "panbiogeographers tend to over-estimate
> the importance of vicariance and under-estimate the importance of
> dispersal, which can be particularly misleading with taxa at higher
> taxonomic levels (Orders and Families).
>       Anyway, I would be very surprised if anyone ever found Meliaceae
> fossils that were 120 million years old (much less 140 million years old).
> I doubt that Meliaceae and Rutaceae had evolved that early (and I am
> certainly not alone).
>                              ------------------Ken
>
> ________________________________
> From: John Grehan <calabar.john at gmail.com>
> Sent: Saturday, November 16, 2019 7:52 PM
> To: Michael Heads <m.j.heads at gmail.com>
> Cc: Kenneth Kinman <kinman at hotmail.com>; taxacom <
> taxacom at mailman.nhm.ku.edu>
> Subject: Re: [Taxacom] Meliaceae (vicariance??)
>
> Nicely summarized with precise details (vs my overly general description).
> And I overlooked that remark about panbiogeographers ignoring dispersal -
> which they do not of course and never have. Its one of those myths that
> keeps popping up over the decades.
>
> John Grehan
>
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