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Isaji et al. 2006 hard to find paper   Message List  
Reply | Forward Message #268 of 1449 |
Re: [Palaeoology] Croc eggs sometimes soft


--- Xavier Panades I Blas <cogombra@...>
wrote:

> Hi,
>
> I think we should send an email to David and his
> team explaining it...


Good idea! I've read Lala's posting (for which,
thanks Lala) which agrees with Charles'. It seems
that the filmmakers did, as I mentioned in my last
posting on this, carefully remove all traces of the
hard shell.

The only thing that concerns me now is why bother
having hard shells at all? If hard shells are there
to prevent the lungs being squashed, as seems to be
the case with birds, why allow the hard shell to
become incompetent in the final stages of incubation?
Perhaps croc's lungs are not so vulnerable, or perhaps
not in the final stages.

Cheers,

John J

PS - I wish I was back in one of my "no TV" times.
Boring but so much more productive!



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Thu May 24, 2007 2:32 pm

strangetruther
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Forward
Message #268 of 1449 |
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Thank you very much for Kenneth Carpenter that after months of searching has located a the paper below...If anybody would like a copy...Just frop me an email! ...
cogombra
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May 21, 2007
9:44 pm

Hi I fancy a copy of that Cheers ... -- Miguel Moreno-Azanza Grupo Aragosaurus Area de Paleontología Departamento de Ciencias de la Tierra Universidad de...
Miguel Moreno-Azanza
mmazanza
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May 22, 2007
10:09 am

Yes, I need. Could you send me a copy? Thanks, Fra ... Da: cogombra <cogombra@...> A: Palaeoology@... Inviato: Lunedì 21 maggio 2007,...
francesco chesi
lampred8
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May 22, 2007
5:09 pm

Last night I saw (again) an old David Attenborough program called "Living with dinosaurs", a dreadful name since it was about crocs, chelonians and large ...
John Jackson
strangetruther
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May 23, 2007
11:56 am

Crocodilian eggs are hard at oviposition having been calcified en masse in the oviduct. Attenborough got it wrong (not often but it does happen). I have worked...
Charles Deeming
charles_deeming
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May 23, 2007
3:08 pm

YeahButNoButYeahButNoBut.... Thanks for that, Charles. Well, now I really don't know what's happening, because I was so shocked I stayed up to watch it all...
John Jackson
strangetruther
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May 23, 2007
3:41 pm

What you saw was a situation that is very common in crocodilians. The extraction of calcium from the shell makes the connection between the calcite crystals...
Charles Deeming
charles_deeming
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May 23, 2007
4:34 pm

Hi, I think we should send an email to David and his team explaining it... Charles Deeming <charlie@...> wrote: What you saw was a...
Xavier Panades I Blas
cogombra
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May 23, 2007
8:50 pm

Dear colleagues, I just saw the discussion regarding croc eggs. Mr. John Jackson and Charles Deeming have already clarified about the situation about the egg...
Lala A.K. Singh
laksingh2005
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May 24, 2007
7:58 am

Hi, For personal and family reasons we do not watch TV at home. Though we watch films and documentaries. Please, I would appreciate if somebodycould send me...
Xavier Panades I Blas
cogombra
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May 24, 2007
9:22 am

... Good idea! I've read Lala's posting (for which, thanks Lala) which agrees with Charles'. It seems that the filmmakers did, as I mentioned in my last ...
John Jackson
strangetruther
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May 24, 2007
2:33 pm

... Maybe the filmmakers removed much of the hard outer shell leaving only the inner membrane for us to see. ... I'd be very interested to see what you think...
John Jackson
strangetruther
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May 24, 2007
2:11 pm

Speaking as a bird and reptile embryologist and incubationist of 25 years standing... since when has the hard shell been there to stop the lungs being...
Charles Deeming
charles_deeming
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May 24, 2007
3:09 pm

Hard eggshells likely evolved for different causes. I think john is refering to that paper by our friend, where he points out that hbirds evolve hard eggshells...
Xavier Panades I Blas
cogombra
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May 24, 2007
6:36 pm

Dear all, Regarding why a hardshell........... (1) Think of 50 odd eggs of a crocodilian, each weighing about 150-180 grams deposited into one pit. What will...
Lala A.K. Singh
laksingh2005
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May 25, 2007
6:00 am

Hi Lala, Please, we would appreciate if you could send us PDF copies of your work.. "Lala A.K. Singh" <laksingh2005@...> wrote: Dear all, Regarding why...
Xavier Panades I Blas
cogombra
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May 25, 2007
2:08 pm

Thank you for the interest. I will send you at least the pulished portions Regards. Lala Xavier Panades I Blas <cogombra@...> wrote: Hi Lala, Please,...
Lala A.K. Singh
laksingh2005
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May 26, 2007
6:56 am

Thanks for addressing this Xavier - I was a bit delayed because I couldn't find my hard copies of Duncker's works (ironic really, but I think it's only ...
John Jackson
strangetruther
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May 28, 2007
1:18 pm

Thank you very much John, Please, I would appreciate a PDF copy of K. Schmidt-Nielsen, "How Birds Breath," Scientific American, December 1971, p. 72-79, John...
Xavier Panades I Blas
cogombra
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May 28, 2007
1:22 pm

Unfortunately I think Sci Am doesn't store papers that old in its electronic archives. I'd have to scan it in, and could do it I think on Tuesday or...
John Jackson
strangetruther
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May 28, 2007
3:15 pm

What is the reference for this paper? ... From: Xavier Panades I Blas To: Palaeoology@... Sent: Thursday, May 24, 2007 7:33 PM Subject: Re:...
Charles Deeming
charles_deeming
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May 24, 2007
6:40 pm

This is my question "why birds reduce the eggshell's unit and incorporate two to three layers on the top of it?" I will scan the paper for all of you... ...
Xavier Panades I Blas
cogombra
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May 25, 2007
11:19 am

I wonder if someone could give a help in my query: besides the possible crocodile eggs from the Late Jurassic of Portugal (personal data), which is the oldest...
Octávio Mateus
omateus
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May 25, 2007
1:00 pm

Yours is the oldest...I enclose a list of all the croco fossil eggs found ever...If somebody has other data...Please, let us know.. Octávio Mateus...
Xavier Panades I Blas
cogombra
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May 25, 2007
2:09 pm

Charles and everybody elese I have this paper in PDF. He has 7 more and it will take me a while to scan them...Please, I would appreciate if you could wait for...
Xavier Panades I Blas
cogombra
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May 25, 2007
2:03 pm

Did you get the paper?... I have a list of his papers Charles Deeming <charlie@...> wrote: What is the reference for this paper? ... ...
Xavier Panades I Blas
cogombra
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May 29, 2007
8:25 am

No! DCD ... From: Xavier Panades I Blas To: Palaeoology@... Sent: Tuesday, May 29, 2007 9:25 AM Subject: Re: [Palaeoology] Croc eggs sometimes...
Charles Deeming
charles_deeming
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May 30, 2007
7:52 pm

There you go! Charles Deeming <charlie@...> wrote: No! DCD ... From: Xavier Panades I Blas To: Palaeoology@... Sent:...
Xavier Panades I Blas
cogombra
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May 31, 2007
10:51 am
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