In three views of an ancient hominid skull, the teeth are color coded to show which ones (the green ones) were used in a study to determine the rate of dental development. Other teeth are colored red and orange (for not used in the study) and shades of blue (for missing teeth).

Fossil teeth hint at a surprisingly early start to humans’ long childhoods

Signs of temporarily delayed tooth development in the skull of an ancient Homo species youth spark debate about the origins of humanlike growth.

Science News