Monday 24 September 2018

Meet One Of Our Relatives,

well ancestors if you want to be correct,



meet the 558-million-year-old fossil of Dickinsonia, a type of Ediacaran organism, that may just be the first animal species on Earth, until now it was not known whether they were primitive animals, other complex lifeforms like lichen or giant amoebas, or failed experiments of evolution, but now Jochen Brocks at the Australian National University and his colleagues have found fat molecules in 558 million-year-old fossils of Dickinsonia – a type of Ediacaran – that confirms it was an early animal, the researchers collected the fossils from sandstone cliffs in a remote area of the White Sea region of Russia, the cholesterol-like molecules preserved in them are found in almost all of today’s animals, but have low abundance in other lifeforms like bacteria, lichen and amoebas, “It tells us this creature in fact was our earliest ancestor,” says Brocks, so it is 'hello Uncle Ediacaran!', the first large complex organisms – known as the Ediacarans – appear in the fossil record about 570 million years ago, just before the Cambrian explosion of modern animal life, for a more detailed look at our ancestor have a read over at New Scientist, photograph by Ilya Bobrovskiy / Australian National University.


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