Re: Great Size and Oxygen Content of Atmosphere

[John Schneiderman <dino@revelation.unomaha.edu>]

On Thu, 25 Jan 1996, Gary Bull wrote:

> There was a theory that the oxygen content of the earth's atmosphere was 
> greater when very large dinosaurs roamed the earth, enabling them to grow 
> large.  Can't remember anything else about the theory or whether it was 
> disproved (or unprovable).  

During a Historical Geology class the professor stated during the 
Cretaceous, cocoliths (calcium carbonate critters) were so numerous that 
the oxygen to carbon dioxide ratios became inbalanced, producing a higher 
than normal oxygen levels.

Check out an introductory Historical Geology textbook and take a look...

---John Schneiderman (dino@revelation.unomaha.edu)