Well folks, this will be the last Fossil Friday for a while. Next week we will be debuting a new feature in its place. This isn’t because we don’t love fossils—we do!—nor is it because we have grown tired of Dan Coleman and Dan Phelps’ Fossil Friday dominance. Rather, it is because we felt a change might be nice, at least for a little while.

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What oh what is this funny thing? It looks like a particularly beautiful topographic map. Of course, that’s not what it is. Can you figure it out? First to get it right wins heaps of praise.

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A fossil

It’s the goniatid—or if you prefer the goniatite—Imitoceras rotatorium, and what’s not to love? Stephanie Keep recently told you about the collective NCSE fondness for cephalopods, and goniatites are cephalopods found in the fossil record from the Devonian to the end of the Permian; they resemble their later cousins the ammonites.

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A fossil

Again with the swirliness! But it’s not a summer repeat of the edrioasteroid. What, then, is it? If you think you know the answer, write it on a postcard or a scanning superconducting quantum interference device microscope—you can never have too many, right?—and mail it to NCSE, 1904 Franklin Street, Suite 600, Oakland CA 94612. Or just leave a comment below.

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