Fossils of African Fauna
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction
More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction
African, Arabian Mammals Didn’t Escape Grande Coupure Extinction

More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.

More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds.

teeth
Megalodon from prehistoric times scene 3D illustration
Classroom Science Leads to Revision of Megalodon’s Size
Connor Lynch | Sep 1, 2021
A handful of high schoolers prompt scientists to develop a new approach for calculating the size of the ancient behemoth.
Image of the Day: Bear Sinuses
Amy Schleunes | Apr 10, 2020
A new study finds that the extinct European cave bear’s large sinuses represent a tradeoff between hibernation length and the flexibility of their diets.
Image of the Day: Tiny Dinosaur
Amy Schleunes | Mar 16, 2020
A roughly 99-million-year-old piece of amber from northern Myanmar contains the skull of what appears to represent the smallest known dinosaur of the Mesozoic era.
Image of the Day: Fish that Eat Fish
Emily Makowski | Sep 13, 2019
Researchers categorize the different jaws of piscivorous fishes.
teeth great irish famine dental calculus
Image of the Day: Famine Victim Teeth
Emily Makowski | Sep 12, 2019
Dental calculus provides a look into the diets of 42 people who died during the Great Irish Famine.
Snapshot of the repairing experiment on a human tooth
Image of the Day: Enamel Repair
Nicoletta Lanese | Sep 3, 2019
Scientists engineered a new material that could be developed for use in treating tooth decay.
skeleton teeth ancient hominin oral microbe dental plaque calculus
Caution Urged for Comparing Ancient and Modern Humans’ Oral Microbes
Alejandra Manjarrez | Aug 7, 2019
Microbial species that are commonly associated with oral diseases in modern humans are unreliable proxies for determining tooth health status in ancient samples, a new study finds.
dragonfish transparent teeth light structure prey hunting
Image of the Day: Invisible Weapons
Chia-Yi Hou | Jun 6, 2019
See a close-up of the deep-sea dragonfish’s transparent teeth.
Image of the Day: Gnashers
Carolyn Wilke | Feb 18, 2019
A mollusk grows magnetic teeth so tough they can grind down rocks.  
Newly Discovered Ancient Shark Found Alongside Bones of T. rex
Carolyn Wilke | Jan 22, 2019
Galagadon’s tiny teeth look like the spaceships in its namesake video game from the early 1980s.
Image of the Day: Wisdom Teeth Lost
Carolyn Wilke | Jan 9, 2019
A study of tiny monkey skulls and teeth suggests that shrinking body size didn’t crowd out wisdom teeth during evolution.
Humans Lived in Southeast Asia More Than 60,000 Years Ago
Shawna Williams | Aug 9, 2017
Tooth fossils of cave dwellers represent the first known instance of our species inhabiting a rainforest.
Image of the Day: Teeth
The Scientist Staff | Jul 3, 2017
Once mated, female cabbage white butterflies (Pieris rapae) use their "vagina dentata" to rip through the hard encasing of a male’s ejaculated spermatophore. 
Enhancing Stem Cells Helps Regenerate Damaged Teeth in Mice
Diana Kwon | Jan 9, 2017
Scientists repurpose an Alzheimer’s drug to enhance the ability of stem cells to repair dental damage in mice.
Study: Dinosaurs Lost Teeth, Grew Bird-Like Beaks
Joshua A. Krisch | Dec 27, 2016
Fossil analysis suggests members of at least one dinosaur species started out with full sets of teeth, only to lose them in adulthood and develop beaks instead.
The Topography of Teeth
Bob Grant | Nov 28, 2016
Intricate, digital maps of animals’ teeth, created using the same geographical tools used by mapmakers, may help researchers determine the diets of extinct species.