[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Wollemi, Attenborough, and Branagh
On Wed, 11 May 2005 01:19:00 -0700 "T. Michael Keesey" <firstname.lastname@example.org>
> From what I can glean, the *first* fossil record of the _Wollemia
> nobilis_ stem-lineage is dated at 90Ma, and the split from other
> extant _Araucariaceae_ would have been about 200Ma.
Does anyone know of the *youngest* fossil occurrence of the group?
> One interesting thing about them is that there has not been any
> genetic variation detected between specimens. It seems that each
> is a virtual clone of each other one, despite the fact that they
> reproduce sexually.
So they're the cheetahs of the plant kingdom, eh? (well not quite,
cheetahs have *some* genetic variation, albeit not much).
Then it is a good thing that the park is widely disseminating those
seeds. One introduced parasite/fungus could wipe out the whole forest.