11 Divinity AveCambridge, MA 02138
Dietary transitions in a Neanderthal permanent first molar. Top: developmental time (in days from birth) of each stress line in enamel (dark blue lines) determined from daily growth increments (following dotted blue lines). Scale bar = 1mm. Bottom: barium distribution shows marked variations in enamel coinciding with birth, 227 days, and 435 days, which resemble macaque transition from exclusive maternal milk consumption to weaning. Dietary regions: 1. prenatal, 2. exclusive mothers’ milk, 3. transitional period, and 4. post-weaning. The enamel-dentine junction is indicated with a dashed line.
Click here to view the relevant press release.
Image credit: Austin et al. Nature (2013)