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“Deep

Inside the National Museum of Natural History's New Fossil Hall

The much-anticipated exhibition is packed full of Mesozoic dinosaur drama, new science, hands-on discoveries and state-of-the-art museum artistry
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Inside the Exhibit

A 16-Million-Year-Old Tree Tells a Deep Story of the Passage of Time
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Artist at Work

The Muralist Who Inspired Today's Paleoartists
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Learn More

The David H. Koch Hall of Fossils— Deep Time Exhibition

Dinosaur News

Dinosaur Bones Shimmering With Opal Reveal a New Species in Australia

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Newly Discovered Bat-Like Dinosaur Reveals the Intricacies of Prehistoric Flight

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When Tyrannosaurs Were Tiny

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New Type of Arctic Dinosaur Discovered in Alaska

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Fossil Site May Capture the Dinosaur-Killing Impact, but It’s Only the Beginning of the Story

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

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

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More From Dinosaur News »

Question Time With Dr. Sues

Are Birds Dinosaurs?
What Is the Smallest Known Dinosaur?
What Did Stegosaurus Eat?

Ancient Earth

A 16-Million-Year-Old Tree Tells a Deep Story of the Passage of Time

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Earth's Largest River Delta Was the Size of Alaska

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Fossil Treasure Trove of Ancient Animals Unearthed in China

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Earth's Rock Record Could Reveal the Motions of Other Planets

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This Map Lets You Plug in Your Address to See How It's Changed Over the Past 750 Million Years

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More From Ancient Earth »
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Ask the Experts

How Do Fossils Form?

Learn from the Smithsonian’s curator of vertebrate paleontology Anna K. Behrensmeyer, a pioneer in the study of how organic remains become fossils
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How Does Earth's Carbon Cycle Work?

Stanford University’s Katharine Maher explains the mechanisms that heat and cool the planet
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How Do Paleontologists Find Fossils?

Smithsonian’s Hans-Dieter Sues, who has collected fossil vertebrates in the U.S. and around the world shares some of his tips
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How Do Scientists Date Fossils?

Geologists Erin DiMaggio and Alka Tripathy-Lang explain techniques for targeting the age of a fossil find
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At the Smithsonian

Here Are 12 Things You Might Miss in the Smithsonian's New Fossil Hall

Meet the Dinos of ‘Deep Time’

The 'Nation's T. Rex' Prepares to Make Its Smithsonian Debut

Reimagining the Megalodon, the World's Most Terrifying Sea Creature

A Giant Sloth Mystery Brought Me Home to Georgia

Smithsonian Voices

How the Geologic History of the Earth Provides Clues for Our Future

For Earth Day, Smithsonian paleobiologist Scott Wing reminds us that we can look to the fossil record to better understand human-caused global changes
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Try These Hands-On Activities in the Smithsonian's New Fossil Hall

Paleontologist Hans Sues Is Taking Your Questions About Dinos, Humans and Even Cats

Smithsonian's new YouTube series, "The Dr. Is In."

Meet the Real Rock Star of the New Dino Hall—the Fearsome Ceratosaurus

The dinosaur is finally giving up its secrets as it prepares for a long fight with a <i>Stegosaurus</i>

An Elegy for Hatcher the Triceratops

Why Is This Smithsonian Paleontologist Dressed as Santa?

Cat-loving paleontologist answers your questions in the National Museum of Natural History's YouTube series, "The Doctor Is In."

Q&A: Smithsonian Dinosaur Expert Helps T. Rex Strike a New Pose