A fossil!

From the Ediacaran it came! Identify it in the comments below, and win undying glory!

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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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