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

On Mon, Jan 15, 2024 at 8:14 AM Linda Powers <[log in to unmask]>
wrote:

> Dear Listers,
>
> 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
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