When people ask me to sum up what I write about, I often respond “Prehistoric creatures with big, scary teeth.” That isn’t strictly true –- my interests are a bit wider than that – but I do have a fondness for sharp-toothed Jurassic theropods, sabercats, and other formidable carnivores of ages past. (When a friend of mine recently extolled the virtues of the herbivorous hadrosaurs, I jokingly responded, “Of course they’re important –- tyrannosaurs had to eat something, after all.”) It goes without saying that teeth are just as crucial to herbivores and omnivores