How are Bones Identified?!
It is unusual for complete animal skeletons to be discovered during archaeological excavation. At times only a single bone or very few bones from one species of animal is recovered. For example, only a pelvis and humerus from Canter's Cave was available to Dr. Wetmore to make his identification of the Lesser Sandhill Crane. So how can scientists and researchers in the fields of archaeology and natural history be so confident in their identifications?
- Provenience, provenience, provenience! - Being sure of where the faunal remains were discovered will limit the possibilities of identification. You don't need to worry about finding the bones of a koala in an Ohio cornfield!
- Morphology - All bones are not made alike. It's morphology, or size, shape, and even interior and exterior texture, can provide major indicators in identifying the animal as a mammal, fish, bird, reptile, or amphibian. From there, the overall size of the animal can be estimated to small, medium, or large.
- Compare & Contrast - Research labs - and even our own collections! - collect faunal remains of known species, sex, and age to compare unidentified bones. So the unknown bone of a small reptile can be compared to the bones of known reptiles for certain species identification. Check out this video on how Dave uses dermestid beetles to deflesh animal remains for comparative use.
- Textbooks - In lieu of a comparative collection, animal bone identification manuals are the next best thing!
Given experience in looking at bones, like Dr. Wetmore, Goslin, and Dave, a professional can make quick work of identifying animal bones!