Two dinosaurs diverged in the middle of evolution, and I’m not at all sorry that they both flourished. One became an herbivore, harming no one but plants, while the other grew into a carnivore, eating its siblings. That’s the way of this evolutionary universe. The Eodromaeus and Eoraptor split took place near the very inception of the dinosaur form, with the most basic of existential options: eat or be eaten. Noted paleontologist Paul Sereno has been excavating these Argentinean Lilliputian dinosaurs and has detected that the species, while similar, had irreconcilable food preferences.

Dinosaurs are often relegated to the age of children. When we grow up, we’re supposed to take interest in more modern developments and leave the dinosaurs in the dust. Their value, however, is often underappreciated. We learn about our world by examining theirs. Identification is subtle and sometimes wrong. Little Eoraptor is now thought to have been the plant-connoisseur, despite the terrifying, Jurassic Park-sounding name. We call them what we think they might be. Further discovery often changes the complexion of the picture.

When forced into a choice of more adult occupations, perhaps I unwittingly rebelled, choosing to study ancient religions. Like dinosaurs, religions evolve. As a child it was far easier to tell the preferences of dinosaurs since their morphology often gave them away. Religions are much more subtle. We are told that some dinosaurs survived in the form of birds. Many, many millennia of evolutionary pressure reduced their size and morphed their scales into feathers. Sometimes it’s hard to recognize a carnivore even when it’s just outside your window. That’s the way it works. Some follow the herbivore track, others prefer the way of the carnivore.

It's not the Eoraptor you think you know (from WikiCommons)