Remember, remember

Lecturing the 2nd years about biogenic sedimentology on Bonfire Night, I start talking about the inflammatory topic of ichnofacies and the fire alarm goes off. Every girl and guy forks out of the lecture theatre, through the fire exit, and onto the damp lawns. I pretend its an impromptu fieldtrip to examine some Darwinian bioturbation. Then the man comes and tells us we can go back in for a brief Cambrian explosion.

I knew there'd be fireworms today!