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Breaking News: One billion year old fungi found are Earth's oldest - News Paper-News of the United States was founded in 1933 by David Lawrence (1888-1973), which also started the World Report in 1946. The two magazines are covering national and international news separately, but Lawrence combines them into news reports of U.S. in World and 1948 [1] and Later sold the magazine to its employees. Historically, this magazine tends to be a bit more conservative than the two main competitors, Time and Newsweek, and focus more on the story of economic, health, and education. It's also distancing news, entertainment and sports celebrities. [2] an important milestone in the history of the beginning of the magazine is including the introduction of the "Washington Whispers" column in 1934 and the column "News You Can Use" in 1952. [3] [4] in 1958, the circulation of the weekly magazine passed one million and two million in 1973. (
wikipedia) Breaking News: One billion year old fungi found are Earth's oldest - News Paper
Scientists have unearthed fossilised fungi dating back up to one billion years, in a discovery that could reshape our understanding of how life on land evolved, research showed Wednesday.
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A billion-year-old fungi microfossil includes the earliest documented presence of chitin, a fibrous
substance found not only in fungi cell walls but also arthropod exoskeletons and fish scales
[Credit: Loron et al. 2019] |
For decades, the earliest known fungi—organisms such as mushrooms, mould and yeast—was thought to have appeared on earth around half a billion years ago.
But recent fossil specimens unearthed in Canada and analysed using the latest dating technology appear to push back fungi's arrival to the earliest reaches of life on land.
Corentin Loron, a PhD student from the University of Liege, Belgium, and colleagues examined the microfossils to determine the chemical composition of their cells.
They found the presence of chitin—a fibrous substance that forms on fungal cell walls—and examined the age of the rock the fossils were found in by its ratio of radioactive elements.
They concluded the microfossils were between 900 million and one billion years old.
Loron said the finding was significant because in the "tree of life", fungi are part of the same umbrella group of organisms—known as Eukaryotes—as plants and animals.
"This means that if fungi are already present around 900-1000 million years ago, so should animals have been," he told AFP.
"This is reshaping our vision of the world because those groups are still present today. Therefore, this distant past, although very different from today, may have been much more 'modern' than we thought."
Fungi are among the most abundant organisms on the planet and are the third largest contributor to global biomass after plants and bacteria.
They are six times heavier than the mass of all animals combined—including humans.
The study was published in the
journal Nature.
Source: AFP [May 22, 2019]
from The Archaeology News Network http://bit.ly/2Wf9M6L
Breaking News: One billion year old fungi found are Earth's oldest - News Paper
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Breaking News: One billion year old fungi found are Earth's oldest - News Paper
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