news:0a60c.54003$aH3.1659019@bgtnsc04-news.ops.worldnet.att.net...
>
>
> 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.
> >>
> >>RF
> >>
> >
> >
> > So is this fossil a bird or is it a reptile?
>
> Archaeopteryx, Archy for short, is an archosaur. Archy is also a
> dinosaur in particular a theropod. The question is, is Archy a bird?
> That depends on the definition of bird you use, IMO Archy is a very
> primitive bird.
>
> >
> > If hoatzins don't have bony tails now, then that's not a big issue.
Within
> > cats and dogs, tail length differs greatly.
>
> Modern birds, neornithes, have greatly reduced the number of caudal
> vertebrae and generally the remaining caudal vertebrae are fused into
> the pygostyle. Archy and some of his close relatives retained long bony
> tails but they are all extinct now.
>
> >
> > Kindly explain to me the evolution of the feather, and what the drivers
were
> > behind that evolution when skin flaps were fine for pteradactyls and
still
> > are for chiroptera, which handle flight better than many birds.
> >
>
> Feathers are modified reptilian scales. The original adaptive benefit of
> feathers is unknown but was probably for either warmth or display.
That's what H G Wells wrote in his 'short history of the world'. If they
were for warmth, then are there any feathered reptiles with no wings?
>
> There remains a great deal of debate over how flight appeared in Aves.
> It could have been a result of a fast running/leaping lifestyle or it
> could have been an adaptation to an arboreal lifestyle.
So you would say that flightless birds used to be the norm, then, like kiwis
and struthionids, and that lot?
>
> BTW pterosaurs is the correct term for the group of flying reptiles that
> pterodactyl is one genus of.
>
I knew there had to be a better word, but I couldn't think of it. Thanks for
that.
Uncle Davey
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