Paul Monfils was right. Here is what Richard E Petit says about the specimen:

>This is a badly worn Cancellaria (Hertleinia) mitriformis Sowerby.  Am not
>surprised that you could not recognize it from the terrible figure (ex
>Thesaurus) in Keen. The spiral cord at the suture with another strong cord
>just below makes this one rather easy even if worn.  At least half of the
>cancellariid figures in Keen are terrible.  For instance, it would be hard
>to tell from the illustration that C. corrugata has spiral sculpture.
>
>There is a good illustration of C. mitriformis in Kaicher's Card Packs but
>the one in the Compendium is not very good.


--
Andrew Grebneff
165 Evans St, Dunedin 9001, New Zealand
<[log in to unmask]>
Seashell, Macintosh, VW/Toyota van nut