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Scientists find oldest-known fossilized digestive tract — 550 million years(图)
Scientists oldest-known fossilized digestive tract 550 million years
2020/1/19
A 550-million-year-old fossilized digestive tract found in the Nevada desert could be a key to understanding the early history of animals on Earth.More than a half-billion years ago, life on Earth con...
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Scientists find world’s oldest fossil mushroom(图)
Scientists world’s oldest fossil mushroom
2017/7/21
Roughly 115 million years ago, when the ancient supercontinent Gondwana was breaking apart, a mushroom fell into a river and began an improbable journey. Its ultimate fate as a mineralized fossil pres...