Paleontology
Defaults: Biology-4 and others.
This is the science of fossil study. Make a skill roll to recognize fossils or to deduce an organism's habitat, structure, etc. from fossil evidence. A successful roll – with equipment modifiers for lab facilities – identifies the approximate age of a fossil.
You must specialize:
Micropaleontology: The study of fossils too small to be seen with the naked eye. This skill requires a lab.
Paleoanthropology: The study of human fossils and tools, and the relation of primitive tribes to their habitats. Also defaults to Anthropology-2.
Paleobotany: The study of vegetable fossils.
Paleozoology: The study of prehistoric animals from fossilized bones, food, feces, footprints, etc.
These specialties default to one another at -2.