An introduction to Deep Time, the Geological Timescale and dating the Earth's past Stone Age man ate mushrooms as part of their diet, a study
on ancient tooth plaque has revealed.
Most genetics research
on ancient teeth has focused on the inner tooth tissue, dentine, but Adler's team found that cementum, the coating of the root, was a richer source of DNA.
Not exact matches
Probably creationist don't turn to Leviticus 13 for medical advice
on how to treat skin disease (leprosy); nor do they turn to Joshua 6 (Siege and fall of Jericho) for lessons in military science; nor do they turn to the staple of
ancient legal science in Exodus 21:23 - 2 (lex talons «eye for an eye,
tooth for a
tooth») for modern jurisprudence.
To blame the past for errors which have brought us to this pass is to indulge in the
ancient fallacy of saying that the fathers have eaten sour grapes and the children's
teeth are set
on edge.
Shorter spines seen
on some
ancient specimens could have functioned somewhat like
teeth and might have been an early evolutionary step toward
tooth development, Briggs proposes.
The findings bolster earlier suggestions that
ancient fish had enamel - armored scales, and they point to a new scenario for exactly how the substance ended up
on teeth.
We've been excavating a site
on the beach about 10 meters from the high tide line for about 10 years, finding stone tools and
ancient mammal bones and
teeth.
In this issue alone, we report
on ancient advances in dentistry that would have treated
tooth decay, and a new technology that, if developed, could alleviate water shortages.
CHIPPED OFF
Tooth damage sustained by Homo naledi, an
ancient South African humanlike species, resulted from a diet heavy
on hard or gritty objects, researchers say.
As soon as spelunkers led by Pedro Boshoff, a former student of Berger's, found a handful of
ancient teeth and a jaw deep in the cave's Dinaledi Chamber in September 2013, it was clear that «something bizarre was going
on,» Berger says.
Based
on analysis of more than 300
teeth, skull and lower - body measurements, Alba and colleagues assign the partial skeleton to a new genus and species of
ancient ape, Pliobates cataloniae.
A rich history of life
on earth lies out of sight — in 100 million - year - old nuggets of amber, in potato - shaped fossil eggs, and in mundane - looking
ancient teeth.
Thanks to a lack of dental hygiene in the Middle Ages, Warinner found a trove of
ancient microbial material
on teeth of four skeletons from a medieval monastery in Dalheim, Germany.
The new findings
on Arctic Ocean salinity conditions in the Eocene were calculated in part by comparing ratios of oxygen isotopes locked in
ancient shark
teeth found in sediments
on Banks Island in the Arctic Circle and incorporating the data into a salinity model.
CU - Boulder Associate Professor Jaerlyn Eberle, left, and research colleagues collect
ancient sharks
teeth on Banks Island in the Arctic Circle.
This year, geneticists at the Australian Centre for
Ancient DNA (ACAD) at the University of Adelaide hope to recover DNA from a roughly 18,000 - year - old H. floresiensis
tooth, which was excavated in 2009 from the Liang Bua site
on the Indonesian island of Flores.
The idea of being bitten by a nearly toothless modern frog or salamander sounds laughable, but their
ancient ancestors had a full array of
teeth, large fangs and thousands of tiny hook - like structures called denticles
on the roofs of their mouths that would snare prey, according to new research by paleontologists at the University of Toronto Mississauga (UTM).
A team of researchers has validated data and found a new model for paleontologists to use to track the diet of our
ancient ancestors and animals by analyzing the wear
on their
teeth.
A team of scientists has shown for the first time that nicotine residue can be extracted from plaque
on the
teeth of
ancient tobacco users.
The plot hinges
on an
ancient silk manuscript written in a mysterious tongue, torn in half by the
teeth of the last Chinese emperor, Puyi, in a fit of rage, and destined to be a...