In a message dated 7/11/2007 2:06:34 P.M. Pacific Daylight Time,  
[log in to unmask] writes:

(none of  which is usually "corrugated")



Now I must differ with you there. If you look at a sheet of corrugated  
steel, you will see a ripple effect of high and low points along the sheet of  
metal. This is the same effect when you look at the edge of a Pecten  ssp. (many 
different shells by the same genus) marine bivalve. If you look  directly down 
on the sheet or shell, you see high ridges and troughs. The  Pecten is the 
physical definition of scallop. 
 
Ron May
Legacy 106, Inc.



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