Taxacom: supposed evidence of Pacific ignuana dispersal

[John Grehan]

" At the bottom is a comment from someone that "we point out that the Flood
would have created vast islands of flotsam on which they could survive such
trips". Indeed so."

Not surprising to see the center of origin-chance dispersal theory being
concordant with Creation theory about chance dispersal.

"Dipsosaurus catalinensis. So the genus has some aquatic connection"

This island record might provide a neat example of metapopulation survival
of a widespread ancestor in the region. I'm not immediately familiar with
the tectonic and geological history of this region, but possible that
multiple islands involved, and likely quite a complex situation given the
accretion of huge (e.g. nearly half of Mexico, and that is after
compression) terrestrial arcs formerly occupying the Pacific west of North
America.

Cheers, John

On Mon, Mar 24, 2025 at 12:19?AM Geoff Read via Taxacom <
taxacom at lists.ku.edu> wrote:

> Thanks John,
>
> I enjoyed the creationist presentation.  Nice cartoons of happy iguana
> rafting.
> At the bottom is a comment from someone that "we point out that the Flood
> would have created vast islands of flotsam on which they could survive such
> trips". Indeed so.
>
> They had a link to the original Berkeley press release and it has the
> multi-pathway graphic that people who haven't seen the article might find
> interesting and useful.
> Also they mention there is Dipsosaurus iguana species on Catalina island
> off California.  Dipsosaurus catalinensis. So the genus has some aquatic
> connection. Wonder why that wasn't tested (if it wasn't)
>
>
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fnews.berkeley.edu%2F2025%2F03%2F17%2Figuanas-floated-one-fifth-of-the-way-around-the-world-to-colonize-fiji%2F&data%7C02%7Ctaxacom%40lists.ku.edu%7C001ae97dd18240d4487d08dd6ae61dde%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638784258758502321%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=LUfdg%2BBLxS1SMZB5icclmF76NSlB4IzETwgwp9uEwss%3D&reserved=0
>
> Geoff
> --
> Geoffrey B. Read, Ph.D.
> Wellington, NEW ZEALAND
> gread at actrix.gen.nz
>
> (I've cut off the peer review comments which I think went only to John)
>
> >---- Original Message ----
> >From: John Grehan via Taxacom <taxacom at lists.ku.edu>
> >To:
> >Cc: "Taxacom" <taxacom at mailman.nhm.ku.edu>
> >Sent: Mon, Mar 24, 2025, 4:19 PM
> >Subject: Re: Taxacom: supposed evidence of Pacific ignuana dispersal
> >
> >Interesting critical comment from a Creationist site:
> >
> >Isn?t evolution wonderful? Give it plenty of time, and stuff happens. It
> >must be true. PNAS published it with peer review. Peer review guarantees
> >the truth of this ?extraordinary oceanic dispersal event? that must have
> >happened because a species of swimming iguana was once observed going 1/25
> >that distance between islands in the same chain. That and comparative
> >genomics led them to this as the best of ?hypothesized biogeographic
> >scenarios.? The main reason, though, is the requirement to believe in
> >evolution and deep time. ?Oceanic islands have played a pivotal role in
> the
> >development of biogeographic and evolutionary theory,? the authors say.
> >
> >The Crazy Rafting Iguanas ? CEH
> ><https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcrev.info%2F2025%2F03%2Fcrazy-rafting-iguanas%2F&data%7C02%7Ctaxacom%40lists.ku.edu%7C001ae97dd18240d4487d08dd6ae61dde%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638784258758518949%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Vv2fG3LFkq3bBKphGOUSzgsojlqOXIekB%2FfBDtKFniU%3D&reserved=0>
>
>
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