I recently discovered the blog Slime Mold Time Mold, which is largely about the science of obesity — a matter of more than academic interest to me, and if I may say to, to Matt. I discovered SMTM through its fascinating discussions of scurvy and citrus-fruit taxonomy.

We’ve noted many times over the years how inconsistent pneumatic features are in sauropod vertebra. Fossae and formamina vary between individuals of the same species, and along the spinal column, and even between the sides of individual vertebrae.

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I’ve been on Twitter since April 2011 — nearly six years. A few weeks ago, for the first time, something I tweeted broke the thousand-retweets barrier. And I am really unhappy about it. For two reasons.

Many thanks to everyone who played pin-the-skull-on-the-carnivore. The answers are down at the bottom of this post, so if you’ve just arrived here and want to take the challenge, go here before you scroll down. To fill up some space, let me point out how crazy variable the skulls of black bears, Ursus americanus , are.

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