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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Friday’s fossil featured fabulous fancy flanges—weird processes at the rib-ends that look like overlapping rubber spatulas. What the heck are they for, and to whom do they belong? The latter is easier to answer: Eryops megacephalus.

Joshua Sherurcij via Wikimedia Commons

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After last week’s Darwin Day diversion, we’re back to an actual fossil. You’ll notice right away that it features yet another super cool, super funky axial skeleton. What’s up with those ribs, and more importantly, whose ribs are they?

Winner takes all!

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