Sea sponges were the first animals on Earth scientists discover
Posted on: 26 Feb 2016 11:39:50
26 February 2016 Current Affairs: The first animal to appear on Earth was probably the humble sea sponge, American scientists believe. According to researchers at the world-famous Massachusetts Institute of Technology (MIT), sea sponges pre-date the Cambrian explosion, an evolutionary period that began around 540 million years ago, during which a large number of new animals appeared.The MIT team made the discovery by analysing molecular fossils - trace amounts of molecules found in ancient rocks that survive to this day.
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