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Old 1 Week Ago #121
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World's Oldest Footprints Discovered on Ancient Seafloor


Neil Armstrong left the first footprint on the moon, on July 20, 1969. But what about Earth — when did animals first leave footprints here?

While we don't know exactly when animals first left tracks on our planet, the oldest footprints ever found were left between 551 million and 541 million years ago during the Ediacaran period, a new study finds. That's hundreds of millions of years before dinosaurs started roaming Earth, about 245 million years ago. The new findings suggest animals evolved primitive "arms" and "legs" earlier than previously thought.

https://www.livescience.com/62755-ol...on-record.html
 
Old 1 Week Ago #122
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First tetrapods of Africa lived within the Devonian Antarctic Circle


The first African fossils of Devonian tetrapods (four-legged vertebrates) show these pioneers of land living within the Antarctic circle, 360 million years ago.

The evolution of tetrapods from fishes during the Devonian period was a key event in our distant ancestry. Newly found fossils from the latest Devonian Waterloo Farm locality near Grahamstown in the Eastern Cape, South Africa, published today in Science, force a major reassessment of this event

https://phys.org/news/2018-06-tetrap...ircle.html#jCp
 
Old 1 Week Ago #123
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'Monstrous' new Russian saber-tooth fossils clarify early evolution of mammal lineage


Fossils representing two new species of saber-toothed prehistoric predators have been described by researchers from the North Carolina Museum of Natural Sciences (Raleigh, USA) and the Vyatka Paleontological Museum (Kirov, Russia). These new species improve the scientists' understanding of an important interval in the early evolution of mammals—a time, between mass extinctions, when the roles of certain carnivores changed drastically.

https://phys.org/news/2018-06-monstr...early.html#jCp
 
Old 5 Days Ago #124
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For 100 million years, amber freezes a tableau of Burmese bugs’ life-and-death struggle


One day in Myanmar during the Cretaceous period, a tick managed to ensnare itself in a spider web. Realizing its predicament, the tick struggled to get free. But the spider that built the web was having none of it. The spider popped over to the doomed tick and quickly wrapped it up in silk, immobilizing it for eternity.

https://news.ku.edu/2018/06/07/100-m...death-struggle
 
Old 3 Days Ago #125
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Burmese Amber Preserves 99-Million-Year-Old Tropical Frogs


Four amber-preserved specimens of Electrorana were acquired in the area of Angbamo in Kachin Province of northern Myanmar in 2015.

They provide the earliest direct evidence of frogs living in a wet tropical forest ecosystem and are oldest-known examples of frogs preserved in amber, with the only two previous reports from Cenozoic amber deposits of the Dominican Republic.

http://www.sci-news.com/paleontology...ogs-06102.html
 
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