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Teeth

The 20-karat gold wire was installed some time before the man died.

New Research

Why Did This Wealthy Scotsman Pay a Jeweler to Wrap His Teeth in Gold Wire Hundreds of Years Ago?

What an early example of a dental bridge reveals about health, wealth and social values in the late medieval and early modern world

Rats and other rodents have front teeth that grow continuously, so they gnaw to keep them healthy and in shape. 

Rodents Don’t Gnaw Just to Trim Their Teeth—It Also Feels Good, According to a New Study

The findings could help humans who grind their teeth or clench their jaws

Based on Andrewsarchus’ skull size and the skull-to-body-size ratios of other hoofed predators called mesonychids, scientists estimated in 1924 that the beast was more than 12 feet long and about 6 feet tall. Reassessments of Andrewsarchus’ evolutionary tree, however, suggest this estimate is inaccurate.

This Giant Carnivore Ran on Hooves. Scientists Are Investigating Its Massive Skull and Crushing Teeth to Decipher the Beast’s True Nature

For more than a century, paleontologists have been piecing together how the mysterious predator Andrewsarchus is related to other mammals, like the extinct “hell pigs” and “wolves with hooves”

An artistic representation of T. heberti snacking on some greens.

Cool Finds

A Football-Size Creature That Lived 307 Million Years Ago May Have Been One of the First Land Vertebrates to Eat Plants

“Hebert’s tyrant digger” had teeth built for grinding tough veggies, a new study suggests

Megalodons were massive predators that ruled the world's oceans.

Megalodons Went Extinct Millions of Years Ago. The Prehistoric Predator Could Become Maryland’s Official State Shark

Teeth belonging to the fearsome creatures have been discovered throughout the state. Now, they’re up for consideration by the state legislature

Strange fossils reveal that predatory fish with a wide array of dental setups once stalked prehistoric waters.

Sharklike Fish With Weird, Buzz-Saw Jaws Sliced Through the Seas, Then Vanished. Now, Paleontologists Are Unraveling Their Secrets

These “total monsters of fishes” are extinct today, though new clues about their lives come from CT scans and their closest living relatives: the big-eyed ratfish of the deep sea

In 2025, researchers watched an interstellar comet, learned about human origins and traced the spread of measles.

The Ten Most Significant Science Stories of 2025, From Medical Breakthroughs to an Interstellar Visitor

All year long, these moments captivated the public, demonstrated dangerous trends, and pushed research and innovation forward

Researchers studied ancient tooth fossils and found that a gene mutation in modern humans (right) better protected them against lead and gave them an advantage over Neanderthals (left). 

Our Human Ancestors Were Exposed to Lead, and New Research Suggests It May Have Shaped Human Evolution

Lead exposure may have spelled evolutionary success for humans—and extinction for our ancient cousins—but other scientists are casting doubt on the headline-making study

A juvenile spotted ratfish. These deep-sea fish are named for their long, rat-like tails.

This Deep-Sea Fish Has Teeth on Its Forehead—and It Uses Them for Sex

Researchers suggest the rows of pointed structures on the heads of spotted ratfish are true teeth, offering the first known example of teeth located outside the jaw

Stonehenge at sunset. Construction of the iconic stone circle began around 3000 B.C.E. and continued in several phases.

A Neolithic Cow’s Tooth Helps Point to the Mysterious Origins of Stonehenge’s Iconic Stones

Isotope analysis of a molar from a cow’s jawbone found buried at the monument provides details of the life story of the animal—and how it may relate to the construction of Stonehenge

Novaculadon mirabilis is characterized by its razor-sharp teeth.

A Student Spotted a Jawbone at a Beach. It Turned Out to Be a New, Mouse-Sized Mammal That Lived Among Dinosaurs

The species was named for its pointy teeth and could shed light on early mammal adaptations

An illustration of a mother and calf Janjucetus dullardi, a newly discovered tiny whale species with a sharp bite

Cool Finds

Newly Discovered Prehistoric Whale Is ‘Deceptively Cute’—It’s Tiny but Has a Mouth Full of Razor-Sharp Teeth

Found on the southern coast of Australia, the species could fill gaps in scientists’ understanding of baleen whale evolution

Researchers investigated the Mesozoic Era's atmosphere and vegetation by studying oxygen isotopes in dinosaur tooth enamel. This is a replica of a Stan™ T. rex tooth.

Dinosaur Teeth Provide Key Clues to Earth’s Climate Past, Revealing High Levels of Carbon Dioxide

A new study finds that the Mesozoic Era saw significantly higher quantities of the greenhouse gas than both pre-industrial and modern levels, likely due to volcanic activity

The hyper-realistic busts are on display at the Moravian Museum in Brno, Czech Republic.

New Research

See the Faces of Two Sisters Who Toiled Away in a Neolithic Mine 6,000 Years Ago

Archaeologists created 3D reconstructions of the women’s faces based on an analysis of their teeth and bones. Found in the Czech Republic, the siblings “did not have an easy life,” the new research suggests

Piper betel leaf, the areca nut, limestone paste, tobacco and bark filaments are often combined to get a high.

Were Humans in Thailand Getting High Off Betel Nuts 4,000 Years Ago?

Scientists believe they have found the earliest biochemical evidence of people chewing the popular psychoactive plant

Scientists sequenced ancient proteins in a tooth from a prehistoric rhino relative that had been preserved in Canada's High Arctic for up to 24 million years.

Scientists Recover Ancient Proteins From Animal Teeth Up to 24 Million Years Old, Opening Doors to Learning About the Past

Two new papers analyze fossils found in Canada and Kenya, respectively—vastly different environments for the preservation of genetic material

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Journey Into a Prehistoric Cave That Trapped and Entombed Animals for Millennia

The animals that plummeted 85 feet into Wyoming’s Natural Trap Cave provide a layered history of life dating back to the Pleistocene

This skull of a 1.8-million-year-old Paranthropus robustus individual was unearthed in South Africa, but it was not one of the fossils included in the study.

Scientists Investigate 2.2-Million-Year-Old Tooth Enamel to Unravel the Mysteries of Ancient Human Relatives

By studying proteins preserved in teeth, researchers determined the sex of four Paranthropus robustus individuals that lived in southern Africa

An artistic reconstruction of the extinct megalodon. Scientists' ideas about how the megalodon looked are based on its fossilized teeth.

The Fearsome Megalodon Ate Basically Whatever It Wanted to Reach Its Daily 100,000-Calorie Need, Study Suggests

Scientists previously assumed the giant, prehistoric sharks mostly feasted on whales, but it turns out they probably weren’t so picky

An artistic rendering of an early vertebrate being attacked by a sea-scorpion in dark waters

Our Teeth May Descend From Sensitive Bumps on Prehistoric Fish Armor, New Research Finds

Hundreds of millions of years ago, fish had sensory features on their exoskeletons that contained dentine, the material that makes our teeth sensitive today

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