Re: Dinosaur fish pushed to the brink by deep-sea trawlers
- From: Aidan Karley <doIlookDAFTenoughTOpost@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 20 Jan 2006 16:00:05 GMT
In article <e0Qyf.10605$Jd.1947@xxxxxxxxxxxxxxxxxxxxxxxxxx>, SBC Yahoo wrote:
> There are catfish the locals caught in creeks, they called them "Mud Dogs" ,
> and they had little foot like appendages on them, and they were ugly, but
> not of any scientific interest, at least I never heard of any scientist
> interested in them.
>
The point about the coelacanth (one or both species - but that's another
controversy) is that the bony structure of the "hands" and "arms" is closely
similar to that of *all* land-dwelling animals, the so-called tetrapods. This
indicates that the animals are closely related to the first animals to leave
the sea and become land-dwwelling animals.
> > It is not every day that you come face to face with a dinosaur dating back
> > 400
> > million years, but for the fishermen in Kigombe on Tanzania's northern
> > coast it
> > has become almost routine.
> >
>
Hmmm, well I knew about the Comoros population and the Indonesian
population of course. And the over-fishing and habitat-disturbance threats to
them. Annoyingly, I never gave one second's thought to the possibility of the
Comoros population extending further up the East African coast when I was
preparing to go and work out there. That's definitely moved up my agenda if I
can get any more work out there ... well, interesting times.
But coelacanths are not "dinosaur fish". Stupid phrase. The acme of the
dinosaurs was around 200 million years after the acme of the coelacanths (and
the rest of the lobe-finned fish, from which the land-dwelling vertebrates
developed.
--
Aidan Karley FGS
Aberdeen, Scotland,
Location: 57°10'11" N, 02°08'43" W (sub-tropical Aberdeen), 0.021233
.
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- Re: Dinosaur fish pushed to the brink by deep-sea trawlers
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