Thanks to everyone who chipped in to answer my "curious fossil" posting.
I was in the right phylum, after all. It's a section of Baculites, an
uncoiled ammonoid from the N Amer Cretaceous. The fossil is probably a
cast of the inside of two chambers.
Nice to have Paleonet back on line!
Best wishes, Bill
___________________
William A. Shear
Department of Biology
Hampden-Sydney College
Hampden-Sydney VA 23943 USA
phone (804) 223-6172
FAX (804) 223-6374