They are not famous the way that other ancient artifacts are famous.

They do not have a museum display with dramatic lighting.

They are jaw fragments and molars, carefully housed and preserved in a research collection.

But what they tell us is genuinely extraordinary: that a person, living in a limestone cave in the tropics during the Ice Age, had a habit.

A specific habit.

A habit that their body paid for, in the coin of dental destruction, over a period of years.

The habit was as old as we can currently measure.