A) Schematic view of custom-built micromill for collecting <1 mg samples of tooth enamel for stable isotope analyses. B) Sampling schema for a block of enamel encompassing 1 cm of tooth growth (~1 year). C) Image of sample collection (note: rotated 90 deg. from B)
Chris Widga is a vertebrate paleontologist with the East Tennessee Museum of Natural History at the Gray Fossil Site. His research is focused on the ecology of Quaternary mammals (and increasingly, Neogene).