From: lbmkjm at yahoo.com (brian lee) on 2008.08.06 at 19:43:13(18341)
Dear Pete and all,
Aloha.
Perhaps Dr. Ruth Stockey is lurking about on aroid-l...she and I have corresponded offline...we had a common connection with Betty
Speirs, an amateur fossil researcher of a site called Joffre Bridge in Red Deer, Alberta. Betty is no longer with us, but Ruth is in charge of her collections of fossils from Joffre Bridge. I am sure you know Ruth and her husband,Dr. Gar Rothwell...and their publications on fossil Araceae, including Cobbania.
If we do not hear from her, I'll drop her a line and see if we cannot include her on this discussion. She may be on summer vacation.
Aloha,
Leland
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--- On Tue, 8/5/08, Peter Boyce wrote:
> From: Peter Boyce
> Subject: Re: [Aroid-l] How old are the aroids?
> To: "Discussion of aroids"
> Date: Tuesday, August 5, 2008, 7:51 PM
> Not alone, but with the addition of external data from
> modern distributions, molecular work and subsequent mapping,
> plus time line molecular work we can begin to get a handle
> on the family origin. The one thing that is irrefutable is
> that the aroids are at least early Cretaceous.
>
> I was hoping that this thread would ellicit more responses
> on aroid-l than it has!
>
> Peter
> ----- Original Message -----
> From: Christopher Rogers
> To: 'Discussion of aroids'
> Sent: Tuesday, August 05, 2008 11:53 PM
> Subject: Re: [Aroid-l] How old are the aroids?
>
>
> Thanks, Peter!
>
>
>
> Is that sufficient to establish a molecular ?clock??
>
>
>
>
>
> D. Christopher Rogers
>
> Senior Invertebrate Ecologist/ Taxonomist
>
> ((,///////////=======<
>
>
>
> EcoAnalysts, Inc.
>
> 1.530.756.4481
>
> 1.530. 383.4798 (cell)
>
> 1307 "L" Street
>
> Davis, CA 95616
>
> USA
>
>
>
> ?Invertebrate Taxonomy
>
> ?Endangered Species
>
> ?Ecological Studies
>
> ?Bioassessment
>
> ?Invasive Species
>
> ?Plankton
>
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>
>
>
> Moscow, Idaho ? Bozeman, Montana ? Davis, California ?
> Joplin, Missouri
>
> Selinsgrove, Pennsylvania
>
> ecoanalysts.com
>
>
>
> From: aroid-l-bounces at gizmoworks.com
> [mailto:aroid-l-bounces at gizmoworks.com] On Behalf Of Peter
> Boyce
> Sent: Wednesday, July 30, 2008 11:55 PM
> To: Discussion of aroids
> Subject: Re: [Aroid-l] How old are the aroids?
>
>
>
> Hi Christopher,
>
>
>
> The 'best fit' for this is the Lasoideae with
> Anaphllopsis on the Guiana Shield, Lasimorpha in West Africa
> Anaphyllum in S. India
>
>
>
> very best
>
>
>
> Peter
>
> ----- Original Message -----
>
> From: Christopher Rogers
>
> To: 'Discussion of aroids'
>
> Sent: Thursday, July 31, 2008 1:37 AM
>
> Subject: [Aroid-l] How old are the aroids?
>
>
>
> Hello Peter and Sin Yeng,
>
>
>
> I understand your difficulties! I wrote a paper a few
> years ago revising a genus of freshwater shrimp. There are
> three species in the genus, all found in rain pools on a
> very specific geomorphic surface: one species in North
> America, one in South America, and one in Europe and north
> Africa. The geomorphic settings are all very old, and at one
> time before continental drift, were all near each other at
> the equator. Using this I could estimate the age of the
> genus. So here is my question: are any ?primitive? aroid
> taxa limited to certain geomorphic features that can be
> traced through history? It may give you a means of
> estimating evolution rates for some higher taxa levels.
>
>
>
> Grins,
>
> Christopher
>
>
>
>
>
> D. Christopher Rogers
>
> Senior Invertebrate Ecologist/ Taxonomist
>
> ((,///////////=======<
>
>
>
> EcoAnalysts, Inc.
>
> 1.530.756.4481
>
> 1.530. 383.4798 (cell)
>
> 1307 "L" Street
>
> Davis, CA 95616
>
> USA
>
>
>
> Invertebrate Taxonomy
>
> Endangered Species
>
> Ecological Studies
>
> Bioassessment
>
> Invasive Species
>
> Plankton
>
> Phycology
>
>
>
> Moscow, Idaho Bozeman, Montana Davis, California
> Joplin, Missouri
>
> Selinsgrove, Pennsylvania
>
> ecoanalysts.com
>
>
>
>
> ----------------------------------------------------------------------------
>
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