If you’re new to this thread, here’s a minimal reading list, in chronological order. I say ‘minimal’ because all of the relevant papers are freely available, and therefore all of the factual claims are easy to check.

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What with all the fuss over Aerostron, it seems that we missed SV-POW!’s first birthday. Yes, it’s been just over a year since the very first post, Hello world!, showed us the Brachiosaurus brancai cervical vertebra HMN SII:C8 that we have seen so many times since in various ways.

In the last post I introduced Aerosteon , which has been touted as providing the first solid evidence for bird-like air sacs in non-avian dinosaurs, and I explained a little about how we know what we think we know about dinosaur air sacs.

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Want to see something scary? I mean really scary? OK, here you go: it’s McIntosh et al. (1996:fig. 31), showing the neural arch and spine of dorsal vertebra 6 of Camarasaurus grandis GMNH-PV 101 in anterior and posterior views: I’m sure I need hardly point it out, but this neural spine has two badgering great holes in it! What the heck? This feature is seen on both sides of the vertebra, so it can’t be a simple pathology;

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