--- Charles Brown <charlesb at cncl.ci.detroit.mi.us>
wrote:
>
> ^^^^
> CB: Of course, those "birds" probably still arose
> relatively rapidly
> but just during the Jurassic.
Why would you think this?
You have "birds" in
> quotes.
This is because definitions are a matter of language. Generally they are called proto-birds. Actually I prefer to think of birds as a variety of dinosaur, but call them whatever you want.
Are you
> talking about beings that were the same species as
> modern birds ? It
> makes a big difference here. I doubt what you refer
> to are the same
> species as modern birds.
Well now Smilodon was not a tiger, but it was a cat, wasn't it? "Bird" is not a species.
>
> Whenever, they started up there will be a time when
> they are absent
> from the fossil record and then "suddenly" they are
> in the fossil
> record.
This is the case with every variety of animal, including people.
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