[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Another theory on the origin of birds (plain text this time)... :-)
For what it's worth:
Oh, yeah, that. Hasn't this already come up here?
First, it's _not_ a hypothesis on the origin of birds. It's a hypothesis
on the origin of _dinosauromorphs_ or even ornithodirans in general.
Second, what makes the author think dinosauromorphs ever had brown fat?
Isn't that a mammal-specific tissue?
Are professors "of cell biology and anatomy" somehow prevented from
knowing enough to have a phylogenetic perspective on evolutionary biology?
And how on the planet can anybody after about 1930 still doubt that
ostriches and even penguins had flying ancestors!?!?!
And then Prof. Newman adds a new idea to explain "the extinction of
non-avian dinosaurs": they froze to death because they lacked brown fat.
Doesn't he understand he needs to explain the extinctions of ammonites,
planktonic foraminifera, and cheirolepidiacean conifers, and that hole
in the ground through which the coast of Yucatán runs, at the same time?