Photo of the Month - December 2007

Extreme Dinosaurs In our new issue, a bizarre gallery of Mesozoic monsters prompts author John Updike to ask: What has evolution wrought? Consider the Nigersaurus, with a mouth shaped like a vacuum cleaner. Or take a close look at the Amargasaurus, with a double row of spines that recall the tail fins on a '59 Cadillac. Click through the 22 bizarre dinosaurs from our story and see what makes them so unusual. You can also take our dinosaur IQ test, download your favorite images to your desktop, and play dino jigsaw puzzles. In an audio gallery, featuring 20th-century National Geographic magazine dinosaur paintings, listen to paleontologist Thomas Holtz weigh in on how dinosaur science has changed.

PHOTO OF THE MONTH

Brazil Butterflies spatter the shoreline of the Juruena river in Brazil's new 4.7-million-acre (1.9 million hectares) Juruena National Park. Several different species flock to the riverbank to sip mineral salts from the sand.   Photograph by Zig Koch Visions of Earth, December 2007   E-mail this page to a friend.   Download Wallpaper.

EDITOR'S NOTES   Editor in Chief Chris Johns introduces a story on modern cowboys with a twist; all the images were taken using tintype photography. Read the latest commentary and share your thoughts on the current issue. HIGHLIGHTS Send Us Your Photos > Submit your favorite photo that you've taken and it could be published in National Geographic magazine.     Our Shot > National Geographic photo editors select a new shot each weekday—see the latest.     Gorilla Massacre > Photographers Michael Nichols and Brent Stirton describe the recent gorilla massacres in the Democratic Republic of the Congo. PHOTO GALLERIES       Wings of the Albatross Video >   Explore Bethlehem in A.D. 2007 >   Making Cowboy Tintypes >   Growing Up Albatross > INTERACTIVES       Flight of the Albatross >   Gorilla Time Line >   Albatrosses on the Map >   Test Your Dino IQ >

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