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Re: Triassic protofeathers and fake-heads
It seems to me that there is a clear trend among land vertebrates.
Amphibians have pretty primitive brains and are pretty slow except for their
tongues. Reptiles were more advanced in many ways, but it wasn't until the
Mesozoic that the endothermy thing really kicked in. Had some pretty brainy
and fast dinosaurs, but that unfortunately didn't help them survive the K-T
extinction. Birds and mammals with their endothermy had a running start
when the Cenozoic began, but they certainly weren't as brainy and
coordinated in the Paleocene or Eocene as are modern carnivores or their
fast-running prey. So I guess I would have to say that I do believe there
is a trend toward increasing speed and intelligence in the history of
predators and their prey.
The struggle for survival is a stress that inherently results in
improvements (I'm trying to avoid the word "progress"). Not too many
decades ago, even Olympic ice skaters were just doing double jumps. Now the
women *must* do triples and the men must do *quads* to compete.
From: "Patrick Norton" <firstname.lastname@example.org>
To: "kinman" <email@example.com>, "dinosaur_1" <firstname.lastname@example.org>
Subject: Re: Triassic protofeathers and fake-heads
Date: Tue, 19 Feb 2002 19:52:10 -0500
>Just as early Tertiary mammals were slower (physically and mentally) than
modern mammals, the early dinosaurs were probably relatively clumsy and
Even if you could establish the former, the latter doesn't necessarily
follow unless you believe in some inherent direction in evolution towards
faster, more coordinated (?) and smarter creatures.
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