Cell division patterns in controversial Chinese fossils place them outside the animal kingdom. (p. 10)

Animals migrate to survive. Golden eagles head south for the winter, salmon swim upstream to lay eggs and locusts move on when it gets too crowded. Scientists now say that 150 million years ago, plant-eating dinosaurs called sauropods living in North America may have migrated, too. The new study suggests these enormous animals traveled at the change of the seasons, leaving dry riverbeds in search of well-watered areas thick with plants. Visit the new Science News for Kids website and read the rest of the full story: Dino teeth tell a traveling tale

A mammal fossil unearthed in South America resembles ‘Ice Age’ saber-toothed squirrel. (p. 12)

Single-celled creatures' size spiked as oxygen levels rose.

Body temperature of long-gone beasts resembled that of mammals, study of fossil teeth suggests. (p. 10)

Fossils reveal a non-hopping giant rabbit that lived on the island of Minorca 5 million years ago. (p. 18)

Titanoceratops may be the oldest known member of the triceratops group. (p. 10)

Pint-sized, two-legged runner from Argentina dates back to the dawn of the dinos, 230 million years ago. (p. 10)

A detailed X-ray image of a fossil reveals an ancient marine creature’s diet. (p. 14)