posted on Oct, 28 2013 @ 11:43 PM
reply to post by AbleEndangered
It may have been possible but there is no way to know for certain.
It is possible that they originated in China and people brought them over to Japan when they migrated. A fossil of its ancestor was found on the
border of Switzerland in 1726 so at one time these creatures were far more common in the world. Considering plate tectonics they probably migrated to
Japan when it was still connected to mainland China somewhere between (25-15 Ma).
I do not think it is possible to find where it actually originated from on earth or how it migrated we can only guess how it may have survived things
like ice ages by observing how other creatures cope with similar conditions.