Fossils

The study's authors outline three possible scenarios for the unusual fossil's formation

This 100-Million-Year-Old Squid Relative Was Entrapped in Amber

The ancient ammonite was preserved alongside the remains of at least 40 other marine and terrestrial creatures

White-throated rail.

How Evolution Brought a Flightless Bird Back From Extinction

Fossil remains offer rare evidence of a phenomenon known as ‘iterative evolution’

An artist's rendering of how Suskityrannus hazelae may have looked.

When Tyrannosaurs Were Tiny

A new study describes an early T. rex relative that stood about three feet tall and weighed no more than 90 pounds

A new study identifies the remains of two previously mislabeled species: a short-faced bear and wolf-like carnivore

Divers Find Ice Age Megafauna Remains in Underwater Mexican Cave

The animals include at least seven short-faced bears and one or two wolf-like carnivores

The 8.5-millimeter millipede had five-unit compound eyes and an unusually hairless rear end

This Petite, 99-Million-Year-Old Millipede Was Entrapped in Amber

The diminutive arthropod represents not only a previously unknown species, but an entirely separate Callipodida suborder

A Tibetan monk came across this mandible in 1980 while praying in the Baishya Karst Cave.

Denisovan Fossil Is Identified Outside Siberia for the First Time

A jawbone discovered in a cave on the Tibetan Plateau shines new light on several mysteries that had surrounded the ancient hominins

The fossil Eremotherium was from south Georgia. And it was an important one, since it firmly establish the presence of the giant ground sloth, which had previously been unknown in the United States.

A Giant Sloth Mystery Brought Me Home to Georgia

A new book from former Smithsonian Secretary Wayne Clough describes his journey into the collections in search of connections to his heritage

Artistic reconstruction of Callichimaera perplexa, the "strangest crab that has ever lived."

Fossil Discovery Has Scientists Questioning: What Makes a Crab a Crab?

The newly described C. perplexa seems to have retained larval features into adulthood

An artist's rendering of the extinct hypercarnivore

This Toothy Carnivore Was Bigger Than a Polar Bear

Some 22 million years ago, the apex predator ruled the forests of Africa and dined on the ancestors of hippopotamuses and elephants

New Analysis of Depression-Era Fossil Hunt Shows Texas Coast Was Once a 'Serengeti'

Over 11 million years ago, the area was full of animals

The 13 bones and teeth were found in a cave on the island of Luzon

A New Human Ancestor Species Was Discovered in the Philippines

'Homo luzonensis' boasted an eclectic mix of features comparable different species of hominins

Conditions were ripe for fossil-making when this tiny dinosaur walked through the mud some 120 million years ago. In the lower right corner of this image, you can even see splash mark from a rain droplet.

‘Exquisitely Preserved’ Skin Impressions Found in Dinosaur Footprints

The fossils were so well-preserved that the researchers could even see marks left by raindrops

Artistic reconstruction of two individuals of Peregocetus, one standing along the rocky shore of nowadays Peru and the other preying upon fish. The presence of a tail fluke remains hypothetical.

How Did Whales Reach the Americas? A Four-Legged Fossil Offers New Clues

Dubbed Peregocetus pacificus, the newly-described species was adapted to life both in and out of the water

New Type of Arctic Dinosaur Discovered in Alaska

The duck-billed, crested lambeosaurine shows that a diverse array of dinos lived in the warmer but still harsh Arctic 70 million years ago

International Expedition Will Excavate the Dino-Rich 'Jurassic Mile'

More than 100 paleontologists are heading to the fossil-filled Morrison Formation

Scotty’s skeleton is scheduled to go on view at the Royal Saskatchewan Museum in May 2019

Meet Scotty, the Largest and Longest-Lived T. Rex Ever Found

The dinosaur weighed an estimated 19,555 pounds and likely lived into its early 30s

Colors in nature can be produced by both pigments that absorb some light and microscopic structures that change the wavelength of light.

How Do Scientists Know What Colors Prehistoric Animals Were?

Fossil expert Maria McNamara explains how paleontologists are starting to investigate the hues of the past

The Cambrian Period was a time of remarkable diversification of life when many of the animal groups that exist today first appear in the fossil record.

Fossil Treasure Trove of Ancient Animals Unearthed in China

The fossils from the Cambrian Period include dozens of new species and provide a window into life more than 500 million years ago

Moros was probably about 170 pounds, or roughly the size or a deer.

Meet T. Rex's Teeny Cousin Whose Name Means 'Impending Doom'

A newly discovered tyrannosauroid provides insight into the 70 million year gap in North American tyrannosaur evolutionary records

A great white shark, probably considering its species' triumph over the now-extinct megalodon

Did Great White Sharks Drive Megalodon to Extinction?

An earlier extinction date puts megalodon's fall in line with the rise of the great white

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