Probably not the article you're thinking of but related. A Cretaceous fossil Xenophora that cemented heavy rocks to its shell. https://www.jstor.org/stable/1306922?seq=1---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/scripts/wa-UGA.exe?SUBED1=conch-l-L&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------Dear Listers,---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/scripts/wa-UGA.exe?SUBED1=conch-l-L&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------I recently read a wonderful article about xenophora, detailing in certain regions they pick up various colored rocks, etc. I can't find the article now. Does anyone have a link to it?Thank you,Linda Powers