Riley Black

Riley Black

Riley Black is the author of The Last Days of the Dinosaurs and many other books. She is a science correspondent for Smithsonian magazine covering fossils and natural history, and she writes about the prehistoric past for a variety of publications. 

Stories from this author

Fossils indicate a variety of marine reptiles swam through ancient seas.

From Massive Eyes to Shark-Like Tails, Seven Amazing Adaptations That Helped Prehistoric Reptiles Thrive at Sea

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and the ability to birth live young

A species of remipede known from the Caicos Islands. The photograph was taken by a member of a multinational team looking for rare species. Remipedes are crustaceans that are close relatives to insects.

You Might Think of Shrimp as Bugs of the Sea. But a Remarkable Discovery Shows the Opposite: Bugs Are Actually Shrimp of the Land

A recent study suggests that insects branched out from crustaceans on the tree of life

The tusks of ancient elephants came in a variety of shapes and sizes.

Ten Exceptional Ancient Elephants, From Small Swimming Creatures to Shovel-Tusked Beasts

A wide variety of the exotic animals evolved on Earth over the past 60 million years

The title page painting in Jay Matternes: Paleoartist and Wildlife Painter features a dynamic scene from the Pliocene.

See Stunning Illustrations of Prehistoric Life From One of the Most Renowned Paleoartists in the World

A new book highlights the beautiful work of Jay Matternes, an accomplished artist who drew everything from mammoths to early humans

A mosquito stuck in resin is on its way to becoming a fossil preserved in amber.

How a Fragile Insect Living 100 Million Years Ago Becomes a Fossil

A bug, a dinosaur and a tree intersect, creating the perfect conditions for resin to capture a moment in time

The Tyrannosaurus at Spain’s Jurassic Museum of Asturias offer a speculative take on how dinosaurs mated.

Everything You Want to Know About Dinosaur Sexual Anatomy and Reproduction, From Their Genitalia to How They Laid Eggs

Paleontologists continue to find fossils that help revise our understanding of how dinosaurs did it

Dinosaurs only started to live large after a mass extinction altered the planet in their favor.

How a Mass Extinction Driven by Ancient Volcanoes Led to the Age of the Dinosaurs

Roughly 201 million years ago, drastic changes extinguished many forms of life and led to conditions that allowed the terrible lizards to thrive

Early 20th-century paleontologists wondered whether the small arms of Tyrannosaurus rex were used for grasping when the dinosaurs mated.

Everything You Want to Know About the Sex Lives of Dinosaurs, From Scratching the Ground to Battling With Horns

By evaluating fossils, scientists are learning what creature features may have been used to attract mates and fight off sexual competitors

Paleontologists made discoveries about a wide variety of dinosaurs over the past 12 months.

The Top Ten Dinosaur Discoveries of 2024

From the realization that paleontologists still haven’t found the biggest dinosaurs to the unearthing of a small burrowing dino, the year has been marked by awe-inspiring finds

Smithsonian magazine’s top science titles this year.

The Ten Best Science Books of 2024

From a deep dive on a fatal space shuttle disaster to a study of a dozen iconic trees, these are our favorite titles this year

A sculptor's rendering of "Lucy," Australopithecus afarensis, at the Houston Museum of Natural Science on August 28, 2007.

What ‘Lucy,’ One of the World’s Most Important Fossils, Has Taught Scientists in the 50 Years Since Her Discovery

The famous early human is still providing lessons to anthropologists about prehistoric Earth and its inhabitants

By examining the fossils of ancient creatures, scientists are able to see the origins of features that make mammals different from other animals.

How to Make a Mammal in Nine Evolutionary Steps

From the formation of inner ear bones to the rise of hair to cover our bodies, these developments made us distinct from other animals

Allosaurus

This Captivating Guide Uncovers the History and Mystery of Dinosaurs in 50 Fossils

A paleontologist at the Natural History Museum in London chronicles the age of the famous and fascinating massive reptiles

A worker of the fungus-farming ant species Mycetophylax asper, collected in Santa Catarina, Brazil, in 2014, on its fungus garden

Ants Farmed Fungi in the Wake of Dinosaurs’ Demise 66 Million Years Ago

A new study from Smithsonian scientists analyzes ant and fungus species, and uncovers the origins of their close partnership

Dinosaurs of all shapes and sizes sported feathers.

Dinosaurs Evolved Feathers for Far More Than Flight

Fluff and fuzz helped the creatures keep warm, blend in and communicate

This fossil palm leaf (Sabalites sp.) found in Alaska can be seen in the Smithsonian’s National Museum of Natural History. Sixty million years ago, dense, wet forests covered North America, and many plants, including palms, grew in places such as Alaska where temperatures are too frigid for them today. A new study published in Science gives scientists a picture of when the Earth was warm and when it was cool over the past 485 million years.

In a Landmark Study, Scientists Discover Just How Much Earth’s Temperature Has Changed Over Nearly 500 Million Years

Researchers show the average surface temperature on our planet has shifted between 51.8 to 96.8 degrees Fahrenheit

A reconstruction of Lokiceratops in the 78-million-year-old swamps of northern Montana—as two Probrachylophosaurus move past in the background.

Why Did Dinosaurs Have Horns? It May Not Have Been Simply for Defense

Triceratops and its relatives may have evolved the structures for fighting, impressing mates and more

Rainforests, like this one in Ecuador, only appeared after the mass extinction that ended the Age of Dinosaurs.

No, Dinosaurs Did Not Trudge Through Thick Rainforests

The first jungles dense with flowering plants only formed after an asteroid impact wiped out the giant creatures

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light

Geologists Uncover Remnants of Earth’s Mantle That Have Lasted Over 2.5 Billion Years

New research suggests that a discrepancy in rocks shows they endured extreme heat, and reveals more about an ancient part of our planet’s history

Asteroid impacts and volcanism have led to mass extinctions on our planet.

Has Life on Earth Survived More Than Five Mass Extinctions?

Scientists aren’t just arguing whether humans are causing a sixth mass extinction event now, but whether many more occurred in the past

Page 1 of 60