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Re: T Rex got bad rap * Mass-extinction controversy flares again * Most ancient DNA ever? * Meat-eating dinosaur's footprints found in Portugal

To: DML <dinosaur@usc.edu>
Subject: Re: T Rex got bad rap * Mass-extinction controversy flares again * Most ancient DNA ever? * Meat-eating dinosaur's footprints found in Portugal
From: Dann Pigdon <dannj@alphalink.com.au>
Date: Sun, 20 Apr 2003 07:45:33 +1000
References: <002201c30560$fe53a600$e2c460cb@342w41s>
Reply-to: dannj@alphalink.com.au
Sender: owner-dinosaur@usc.edu

Roger Smith wrote (or rather, sent):
> 
> **  Super-freezing tells age of lead artifacts
> Carbon-14's half-life is about 5,730 years, and by measuring carbon isotope
> ratios inside an artifact such as a dinosaur bone, scientists can roughly
> determine its age.

Yeah. Providing the dinosaur in question is no more than 35-40 thousand
years old.

-- 
________________________________________________________________

Dann Pigdon                   Australian Dinosaurs:
GIS / Archaeologist         http://www.geocities.com/dannsdinosaurs
Melbourne, Australia        http://www.alphalink.com.au/~dannj/
________________________________________________________________

References:
- T Rex got bad rap * Mass-extinction controversy flares again * Most ancient DNA ever? * Meat-eating dinosaur's footprints found in Portugal
  - From: "Roger Smith" <jollyroger@wave.co.nz>

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