I will send you that, the biogeographical papers and some
of my other papers off line. You are welcome to any of my publications, of
Yes, they are my beloved anostracans, notostracans and
clam shrimps as well. I also have the book you mentioned with the chapters by
Paul Tasch. So far most of the anostracan fossils have turned out to be other
things like mayfly nymphs with all their abdominal gills. Some Russians have
published a few papers claiming that they have anostracan fossils back to the
cretaceous, however, my understanding is that the papers have not been peer
reviewed, were published in less than 50 copies, and are not available outside
their institutes. I have been trying for many years to acquire the texts, with
no success. The only reliable fossil anostracan I am aware of is from the
The animals that I mentioned in my last missive are the
genus Phallocryptus, which are found in salars. The south American beast is in the
salars near Buenos Aires.
I know this is waaaaaaaaaaaaaay off Aroids. So if anyone
else is interested in my crustaceans, we can continue this topic off line.
Invertebrate Ecologist/ Taxonomist
1.530. 383.4798 (cell)
1307 "L" Street
Davis, CA 95616
Idaho Ÿ Bozeman, Montana Ÿ
Davis, California Ÿ Joplin, Missouri
From: firstname.lastname@example.org [mailto:email@example.com] On
Behalf Of brian lee
Sent: Thursday, July 31, 2008 10:23 AM
To: Discussion of aroids
Subject: Re: [Aroid-l] How old are the aroids?
Dear Christopher and all,
Wow. There must have been some sort of refugia all that
time to preserve your geomorphic features for the habitat of your shrimp. I
would assume that is rare. What is the geologic history of the sedimentation
or other processes of the region? Are we talking about Anostracan crustacea?
I know you wrote a paper on fairy shrimp in Minas Gerais...could you resend me
the pdf off forum?...I seem to have lost that to virtual world. Anostracans
have a geologic history from the Lower Devonian, according to my Treatise on
Invertebrate Paleontology. I do not recall the age of your geomorphic
features...could you refresh my poor memory? I am most familiar with the
Santana formation fossils of the Late Cretaceous of Brazil...when shallow seas
or lacustrine environments existed....and the connection to African fossils of
similar age are proven. I am assuming your geomorphic features predate
that....perhaps by a significant period.
This is a very interesting point you bring up regarding
tectonic movements and botanical evolutionary trends. Are there many
references on the biogeography of the aroids?
--- On Wed, 7/30/08, Christopher Rogers
> From: Christopher Rogers
> Subject: [Aroid-l] How old are the aroids?
> To: "'Discussion of aroids'" <firstname.lastname@example.org>
> Date: Wednesday, July 30, 2008, 7:37 AM
> Hello Peter and Sin Yeng,
> I understand your difficulties! I wrote a paper a
> ago revising a
> genus of freshwater shrimp. There are three species
> genus, all found
> in rain pools on a very specific geomorphic surface:
> species in North
> America, one in South America, and one in Europe and
> Africa. The
> geomorphic settings are all very old, and at one
> before continental
> drift, were all near each other at the equator.
> I could estimate
> the age of the genus. So here is my question: are
> “primitive” aroid taxa
> limited to certain geomorphic features that can be
> through history?
> It may give you a means of estimating evolution
> some higher taxa
> D. Christopher Rogers
> Senior Invertebrate Ecologist/ Taxonomist
> EcoAnalysts, Inc.
> 1.530. 383.4798 (cell)
> 1307 "L" Street
> Davis, CA 95616
> ŸInvertebrate Taxonomy
> ŸEndangered Species
> ŸEcological Studies
> ŸInvasive Species
> Moscow, Idaho Ÿ Bozeman, Montana Ÿ Davis, California
> Joplin, Missouri
> Selinsgrove, Pennsylvania
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