Re: New ref

[LONEWOLF <s086529@student.uq.edu.au>]

> Abstract: The T-J boundary marks
> a major faunal mass extinction, but
> records of accompanying environmental changes are limited.
> Paleobotanical
> evidence indicates a fourfold increase in atmospheric carbon 
> dioxide
> concentration and suggests an associated 3 to 4 degree
> "greenhouse" warming

Amazing! I know nothing about botany, let alone palaeobotany, but could
anyone give me a brief explanation on how they would be able to find out
something like that from (I presume it was) fossilised plants? I had
understood that physiologically speaking, it was difficult to really find
anything out from fossils, especially plants.

Greg