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Fossils

An artist’s reconstruction of a baby oviraptorid curled up inside its egg

Dinosaur Embryos Tucked Themselves in Just Like Birds

A stunning fossil egg has allowed paleontologists to find new clues about a dinosaur’s early development

In the mountains of southwestern Nevada, the dark fossilized remnants of extinct archaeocyath reefs dot the tops of the hills. Millions of years ago, these peaks were at the bottom of the sea.

Fossils From One of the World’s First Reefs Can Be Found on Mountains in Nevada

Archaeocyaths were the original reef builders, and one of the best places to see them is in the desert

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The Best Books of 2021

The Ten Best Science Books of 2021

From captivating memoirs by researchers to illuminating narratives by veteran science journalists, these works affected us the most this year

The footprints from site A (left) look similar to those excavated from site G (right), but they are much wider. 

A Set of Ancient Footprints May Have Belonged to an Unknown Human Ancestor

The prints were originally attributed to bears, but further analysis reveals that they don’t match bears—or any known human ancestors either

Ankylosaurs were herbivores that lived during the Late Cretaceous period. 

New Species of Ankylosaur Unearthed in Chile Had a Flat, Weapon-Like Tail

About 80 percent of the skeleton was found intact and the specimen may reveal an early evolutionary split in the species

The dinosaur remains of Parrosaurus missouriensis took a total of four years to excavate from an undisclosed area in Southern Missouri.  

Fossil Hotbed Uncovered in Missouri Confirms New Species of Duck-Billed Dinosaur

After years of excavating, the team found a tail, two arms and a skull belonging to a dino that would have been 35 feet long

A Canyonlands park ranger stumbled across the fossil and reported it to the park about a year ago.

A 300-Million-Year-Old Fossil Discovered in Utah Could Be a New Species

Fossilized remains of aquatic creatures are commonly found in Canyonlands National Park, but discovering a land-dwelling vertebrate is incredibly rare

For a tiny, soft-bodied worm, seeking shelter by way of hermiting behavior likely protected it from predators.

Penis Worms May Have Been the First Real Hermits

Hermit crabs may have evolved hermiting behavior 180 million years ago, but penis worms beat them by more than 300 million years

Mosasaurus was among the largest and last of the sea-dwelling mosasaurs.

Giant Sea Lizards Ruled the Waves While T. Rex Roamed on Land

A new fossil discovery shows marine reptiles called mosasaurs lived up until the asteroid impact that killed non-avian dinosaurs

Using micro-CT scans, the team visualized the crab's body in 3-D and even imaged its mouthparts lined with fine hairs. It is unknown if the five-millimeter-long crab is a full-grown adult, a juvenile or a baby.

This Tiny Crustacean Trapped in Amber Tells a Different Story About Crab Evolution

The Cretaceous-era fossil suggests that crabs left the sea some 50 million years earlier than scientists previously thought

A gharial has the same skull shape as some extinct crocodiles. This skull shape has likely evolved three different times during the history of crocodiles.

Modern Crocodiles Are Evolving at a Rapid Rate

Despite their reputation as “living fossils,” crocodiles have changed dramatically in the last two million years

Early humans may have eaten late-stage fertilized eggs, known as balut, or raised the chicks for feathers and meat.    

Thousands of Years Before Humans Raised Chickens, They Tried to Domesticate the World’s Deadliest Bird

Fossilized eggs found in rock shelters suggest cassowaries were cohabitating with our ancestors

The researchers used carbon dating of seeds above and below the footprints to determine their age.

Cool Finds

Prehistoric Footprints Push Back Timeline of Humans’ Arrival in North America

Found in New Mexico, the fossilized impressions date to between 21,000 and 23,000 years ago, a new study suggests

Scientists first spotted the tracks, including this one from a calf, after storms in 2020 swept away several feet of sand in Spain.

Fossilized Footprints Reveal an Ancient Elephant Nursery in Spain

Straight-tusked elephants as young as two months old trampled around the area with their mothers

In one piece of fossilized amber, a female spider was astonishingly preserved, clutching an egg sac filled with spiderling embryos nearly ready to hatch.  

Female Spiders’ Maternal Instincts Captured in 99-Million-Year-Old Amber

Four amber pieces are the earliest evidence of maternal care in spiders

Though the fossil shared a resemblance to others found in the region, it had much longer legs. The team decided to name the new species Kairuku waewaeroa, which means “long-legged” in the Maori language.

New Zealand Kids Discovered This Fossil of New Giant Penguin Species on a Field Trip

Paleontologists say the bird would have been roughly the size of a ten-year-old child

A bone tool from Contrebandiers Cave likely used for making clothes out of the skin of predators.

Evidence of Fur and Leather Clothing, Among World’s Oldest, Found in Moroccan Cave

Humans likely sported clothes made of jackal, fox and wildcat skins some 120,000 years ago

T. gainesi was enormous compared to other ocean creatures living during the Cambrian era, measuring almost 2 feet or half a meter long when most other species measured about the size of a pinky finger.

Ancient Predator With Massive Helmet-Like Shell Unearthed in Canada

The creature was one of the earliest known large predators on Earth

The apex predator Ulughbegsaurus was much larger than the contemporaneous tyrannosaur Timurlengia.

Beyond Dinosaurs: The Secrets of Earth's Past

New, Giant Carnivorous Dinosaur Was a Terror to Smaller Tyrannosaurs

A fossil jaw reveals the large predator lived 90 million years ago

Though considered a whale, Phiomicetus anubis had legs with webbed feet to pursue prey on both land and sea with its powerful jaws and sharp teeth 43 million years ago.

New Research

‘God of Death’ Whale Was Scourge of Land and Sea 43 Million Years Ago

The prehistoric mammal possessed a powerful jaw and likely had a raptor-like feeding style

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