An intact, fossilized specimen of the world’s largest egg—of any known species ever on Earth—entered the National Geographic Society's collection in 1967.
2025-02-05 256词 简单
Today researchers believe the bird resembled an oversize ostrich, though it was most closely related to the kiwi, a smaller species of ratite. Its thick legs had to support some serious weight: Adults could grow to be 10 feet tall and over 1,000 pounds. Elephant bird lineage dates to around 50 million years ago, but their numbers declined as humans settled Madagascar. What happened? Gifford Miller, a geologist at the University of Colorado Boulder who has studied Aepyornis eggshells, says human predation may have been a cause—perhaps even before the birds could hatch.
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