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Re: Lifespan of a species



 From: SMOORE@SCUACC.SCU.EDU
 > Question from a lurker:
 > 
 > What is the lifespan of a species? e.g. T. rex?

Each species has its own life span.  Some live for less than a million years,
others live for tens of millions of years.

T. rex was apparently around for about 3-4 million years (the Late
Maastrichtian).

As presently understood the species Edmontosaurus regalis lived for about
8 million years, or even more.

swf@elsegundoca.attgis.com              sarima@netcom.com

The peace of God be with you.