Teeth

Righties ruled 600,000 years ago

Publication: msnbc.com   Date: April 20, 2011   View Article

Lefties were as outnumbered 600,000 years ago as they are today, according to telltale markings on teeth found on Neanderthal and Neanderthal ancestors in Europe.

The finding serves as a new technique to determine whether a person was left- or right-handed from limited skeletal remains, and it also suggests that a key piece for the origin of language was in place at least half a million years ago, David Frayer, an anthropologist at the University of Kansas, told me today.

Will ‘hobbit’ tooth yield ancient DNA?

Publication: msnbc.com   Date: January 11, 2011   View Article

Scientists are gearing up to use a new drilling technique to extract ancient DNA from an 18,000-year-old tooth that belonged to a “hobbit,” the mysterious, diminutive creatures that once lived on the Indonesian island of Flores.

If successful, a comparison of the DNA with other species could help resolve disputes surrounding who the hobbits were and where they originated.

Ancient Gem Studded Teeth Show Skill of Ancient Dentist

Publication: National Geographic News   Date: May 18, 2009   View Article

The glittering “grills” of some hip-hop stars aren’t exactly unprecedented. Sophisticated dentistry allowed Native Americans to add bling to their teeth as far back as 2,500 years ago, a new study says.

Maya and other ancient peoples of southern North America went to “dentists”—among the earliest known—to beautify their chompers with notches, grooves, and semi-precious stones, according to a recent analysis of thousands of teeth examined from collections in Mexico’s National Institute of Anthropology and History.

© 2008-2010 Collected Writings By John Roach