Using a technique called Resonance Raman spectroscopy, paleontologists have detected hemoglobin remnants in bone extracts from two dinosaur species, Brachylophosaurus canadensis and Tyrannosaurus rex, and confirmed that the molecule is original to these dinosaurs. Bright field images are shown for vessels harvested as described in methods from (a) ostrich vessels soaked in hemoglobin solution under deoxygenating conditions, (b) ostrich vessels soaked...
