科学与环境

Ancient Alberta fish fossils reveal evolutionary secrets of modern species

来源: Phys.org - latest science and technology news stories · 发布于

Ancient Alberta fish fossils reveal evolutionary secrets of modern species
来源: Phys.org - latest science and technology news stories

Rare, complete fossils of ancient fish discovered in Alberta are helping fill in the gaps in our knowledge about which freshwater fish were living in North America at the end of the age of the dinosaurs, and how they evolved into their modern descendants.

Rare, complete fossils of ancient fish discovered in Alberta are helping fill in the gaps in our knowledge about which freshwater fish were living in North America at the end of the age of the dinosaurs, and how they evolved into their modern descendants.

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As ancient oceans warmed, carbon export and fish productivity surged
科学与环境

As ancient oceans warmed, carbon export and fish productivity surged

Ocean fish stocks have been increasingly exploited over time, and remote sensing shows they have declined in the open ocean over the last three decades, particularly in the tropics. But it's uncertain how fish populations will fare in the future, as climate models show both incre

Phys.org - latest science and technology news stories ·

128,000-year-old ice in Tibet could rewrite climate history
科学与环境

128,000-year-old ice in Tibet could rewrite climate history

Ancient ice discovered high in Tibet may be more than 128,000 years old, preserving an extraordinary record of Earth's climate that scientists previously thought had been lost. The discovery reveals a rare glimpse into the last ice age and could reshape our understanding of how g

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