Re: Earthworms?????

Posted by Specter on March 02, 2006 at 16:31:43 from (161.184.192.246):

In Reply to: Re: Earthworms????? posted by Stan(PA) on March 02, 2006 at 12:15:19:

Happy to oblige. Here is a map of the extent of the ice sheets during the last ice age:

As you can see, most of Europe was also covered. So, if North American earthworms were killed off by the ice age, why weren't the European ones also killed off? Doesn't make any sense to me. Also, if earthworms couldn't spread back over North America, how could they spread throughout Europe again? Again, doesn't make sense.

According to the theory that says Europeans brought earthworms to North America, earthworms were carried on animal hooves, peoples' feet, and wagon wheels. Now, if that is the case, why couldn't you apply that same theory to post-ice age North America? As the ice sheet receded, and the animals and Native people moved into the freshly released areas, why couldn't they carry earthworms with them? 11,000 years of spreading over the continent would be much more likely than 400 years, which is how long Europeans have been in North America.

Specter

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