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Subject:	Sinistral cone species: when did they vanish??
From:	Ross Mayhew <[log in to unmask]>
Reply To:	Conchologists of America List <[log in to unmask]>
Date:	Wed, 13 Jan 1999 11:37:20 +0000
Content-Type:	text/plain
Parts/Attachments:	text/plain (10 lines)

One of the mysteries of fossil vs recent cones, is that many fossil
cones are sinistral, while NONE of the modern species are (unless i have
missed something?).  Can anyone tell me when the left-handed cone
species died out, and whether this was a sudden or a gradual process?
Any speculations Why???
 
A Curious Canuck,
 
Ross M.

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