| Re: Any Puter Experts That Can Help |
biology dept., duke |
| mel turner (mturner@snipthis.acpub.duke.edu) |
2004/02/29 14:11 |
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From: mturner@snipthis.acpub.duke.edu (mel turner)
Newsgroups: alt.fan.uncle-davey
Subject: Re: Any Puter Experts That Can Help
Date: Sun, 29 Feb 2004 21:11:10 +0000 (UTC)
Organization: biology dept., duke
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In article <c1shg3$cs1$0@pita.alt.net>, noway@jose.com [Uncle Davey] wrote...
>> In article <c1q3ja$muf$0@pita.alt.net>, noway@jose.com [Uncle Davey]
>wrote...
>> >news:892cb437.0402271151.6f4f0c9d@posting.google.com...
>> >> branchofjesse@hotmail.com (Jerzy Jakubowski) wrote in message
>> >news:<b9b3de8.0402270454.ef64794@posting.google.com>...
>>
>> >> > It's jolly funny that we can find eight toothed hoatzins from 150
>> >> > million years ago and not find eight Australopithecines from 1.5
>> >> > million years ago.
>> >> >
>> >> > Uncle Davey
>> >>
>> >> Come off it Davey! You know that this is a load of bollocks!
>> >> Since when did hoatzins have long bony tails? Not to mention the whole
>> >> suite of other features Archaeopteryx shares with dinosaurs, as well
>> >> as the suite of features it shares with modern birds.
>> >>
>> >> You can't use as an argument "I don't know therefore it isn't true".
>> >> Learn something.
>>
>> >So is this fossil a bird or is it a reptile?
>>
>> Both, of course.
>>
>> [Aves is now included within Reptilia, for that matter.]
>
>Since when, and on whose authority?
I think the formal cladistic redefinition was made during the
1980s, by Gauthier, et al.
It might have been better to drop the name "Reptilia" and use a
substitute like "Sauropsida"
http://tolweb.org/tree?group=Amniota&contgroup=Terrestrial_vertebrates
Say that their names follow
Gauthier, J., A. G. Kluge, & T. Rowe. 1988b. Amniote phylogeny and
the importance of fossils. Cladistics 4: 105-209.
>That is just downgrading birds, that is.
Not really, it's just placing birds in their correct context.
The content of the group hasn't changed, it's now properly recognized
as a sub-group of theropod Dinosauria. [Which is in turn within
Dinosauria, within Archosauria, within Diapsida, within Reptilia,
within Amniota, etc.]
http://dinosauricon.com/taxa/avialae.html
http://dinosauricon.com/taxa/coelurosauria.html
http://dinosauricon.com/taxa/theropoda.html
http://dinosauricon.com/taxa/ornithodira.html
http://dinosauricon.com/taxa/archosauromorpha.html
http://dinosauricon.com/taxa/sauropsida.html
>As compensation, I want Amphibia to join Pisces.
>Or at least, the caecilians should.
Well, in a sense they already are. There is no longer a "Pisces" as
a recognized taxon. The closest equivalent clades would be groups
like "Vertebrata" or "Gnathostomata", both of which already do include
amphibians.
http://dinosauricon.com/taxa/vertebrata.html
http://tolweb.org/tree?group=Sarcopterygii&contgroup=Gnathostomata
http://tolweb.org/tree?group=Gnathostomata&contgroup=Vertebrata
>> >If hoatzins don't have bony tails now, then that's not a big issue.
>>
>> Yes, it is. The presence of a short, fused pygostyle is one of the
>> identifying features of the modern bird clade. Hoatzins have
>> pygostyles like all other modern birds. Archy had a long reptilian
>> tail. It also had toothy jaws instead of a beak, long free clawed
>> fingers instead of fused wing digits, and various other features
>> more like other dinosaurs than like other birds.
>>
>> Within
>> >cats and dogs, tail length differs greatly.
>>
>> Why should you or anyone mistake Archeopteryx for a hoatzin? It's
>> no closer to hoatzins than to chickens or emus or Norwegian Blue
>> parrots.
>
>The plumage don't enter into it.
>This is a dead hoatzin.
Well maybe only if all birds are "hoatzins".
If you're serious about this hoatzin thing, which features of
Archy are the ones that specifically link it with hoatzins. Are
there any at all, other than the wing claws?
[snip]
cheers
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