'True grit' erodes assumptions about evolution
Dining on field grasses would be ruinous to human teeth, but mammals such as horses, rhinos and gazelles evolved long, strong teeth that are up to the task.
Helicoprion: Scientists solve mysteries of ancient 'shark' with spiral-toothed jaw
(Phys.org)—Using CAT scans and making 3-D virtual reconstructions of the jaws of the ancient fish Helicoprion, Idaho State University researchers have solved some of the mysteries surrounding large spiral ...
How the whale got its teeth
Whales are mammals, but they don't look like the mammals living around us, as they have a triangular fluke for tail, no hind legs and no body hair. And inside their mouths, their teeth are unfamiliar too ...
Study: There were more small meat-eating dinosaurs than first thought
University of Alberta researchers used fossilized teeth to identify at least 23 species of small meat-eating dinosaurs that roamed western Canada and the United States, 85 to 65 million years ago.
First fossil bird with teeth specialized for tough diet
Beak shape variation in Darwin's finches is a classic example of evolutionary adaptation, with beaks that vary widely in proportions and shape, reflecting a diversity of ecologies. While living birds have ...
Nature-inspired advance for treating sensitive teeth
Taking inspiration from Mother Nature, scientists are reporting an advance toward preventing the tooth sensitivity that affects millions of people around the world. Their report on development of the substance, ...
Tracing humanity's African ancestry may mean rewriting 'out of Africa' dates
New research by a University of Alberta archeologist may lead to a rethinking of how, when and from where our ancestors left Africa.
Study: Like a tree, growth rings show lobster age
Scientists have finally figured out how to determine the age of a lobster.
Researchers work across fields to uncover information about hadrosaur teeth
(Phys.org)—An unusual collaboration between researchers in two disparate fields resulted in a new discovery about the teeth of 65-million-year-old dinosaurs.
Research verifies a Neandertal's right-handedness, hinting at language capacity
(Phys.org)—There are precious few Neandertal skeletons available to science. One of the more complete was discovered in 1957 in France, roughly 900 yards away from the famous Lascaux Cave. That skeleton ...
From the mouths of molluscs -- ancient snail relative found
Fossils of toothy, slug-like creatures that grazed the sea floor 500 million years ago have shed light on the origins of modern-day snails, shellfish and squid, a study said Wednesday.
Researchers find shark teeth made of natural fluoride
Engineering technology reveals eating habits of giant dinosaurs
(Phys.org) -- High-tech technology, traditionally usually used to design racing cars and aeroplanes, has helped researchers to understand how plant-eating dinosaurs fed 150 million years ago.