Cell division patterns in controversial Chinese fossils place them outside the animal kingdom.
Swedish Museum of Natural History
Swedish Museum of Natural History
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Single-celled creatures' size spiked as oxygen levels rose.Body temperature of long-gone beasts resembled that of mammals, study of fossil teeth suggests. Fossils reveal a non-hopping giant rabbit that lived on the island of Minorca 5 million years ago. Titanoceratops may be the oldest known member of the triceratops group. Pint-sized, two-legged runner from Argentina dates back to the dawn of the dinos, 230 million years ago. |
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