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Million-Year-Old DNA Rewrites the Mammoth Family Tree

Million-Year-Old DNA Rewrites the Mammoth Family Tree
Genomic data the oldest ever recovered from a fossil reveals the origin and evolution of the Columbian mammoth.
Love Dalen, left, a paleogeneticist at the Centre for Palaeogenetics in Stockholm, and Patricia Pecnerova, an evolutionary biologist at the University of Copenhagen, with a mammoth tusk on Wrangel Island, near Siberia.Credit.Gleb Danilov
By Katherine Kornei
Feb. 17, 2021
Imagine an elephant, but significantly taller and heavier and with longer tusks. That’s the Columbian mammoth, an imposing animal that roamed much of North America during the most recent ice age.
When it comes to the mammoth family tree, it has long been believed that the Columbian mammoth evolved earlier than the smaller, shaggier woolly mammoth. But now, using DNA that is more than a million years old the oldest ever recovered from a fossil researchers have turned that assumption on its head: They found that the Col ....

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As NZ gets serious about climate change, can electricity replace fossil fuels in time?

Author:
Jen Purdie
(MENAFN - The Conversation) As fossil fuels are phased out over the coming decades, the Climate Change Commission (CCC) suggests electricity will take up much of the slack, powering our vehicle fleet and replacing coal and gas in industrial processes.
But can the electricity system really provide for this increased load where and when it is needed? The answer is yes , with some caveats.
Our research examines climate change impacts on the New Zealand energy system. It shows we ll need to pay close attention to demand as well as supply. And we ll have to factor in the impacts of climate change when we plan for growth in the energy sector. ....

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Ancient fish as big as the great white shark accidentally revealed by UK palaeontologists

It was astonishing to deduce that this particular fish was enormous
Professor Martill
These marine animals can be found still swimming our seas, having survived the Cretaceous–Paleogene (K–Pg) extinction event responsible for wiping out the dinosaurs.
Most surprising of all was the discovery occurred totally by accident.
Professor David Martill, a palaeontologist from the University’s School of the Environment, Geography and Geosciences, was asked to identify a large bone in a private collection in London.
Fossil discovery: Fossil coelacanth is an example of what a complete fish fossil coelacanth looks li (Image: University of Portsmouth)
Fossil discovery: This colourful image is a microscopic view of the bone showing the microscopic thin layers (Image: University of Portsmouth) ....

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African coelacanth not 65 mn year-old 'living fossil', evolution is evident in the fish' genes: Study- Technology News, Firstpost

The fish went on to earn the moniker living fossil because of its anatomy that resembled fossilised records. ....

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