Research led by Jilin University and Texas A&M University has documented the first known case of cinnabar-stained teeth in ...

we quickly realised that iron was concentrated along the cutting edges and tooth tips, but not on other parts of the tooth,” LeBlanc says. “This also precisely matches the orange staining we ...

have iron-tipped teeth that help them to rip their prey apart, according to new research. The metal is concentrated in the ...