About 250 million years ago, Earth experienced its worst state Its history. Almost all The Marines later disappeared. as well as three-quarters of terrestrial species. It took millions of years for life to recover. Starting with tiny burrowing animals from the bottom of the oceans, an international team of researchers tell us today.
The information was hidden From southern China. At the heart of fossil traces that reveal 7 million years of our history. Soft-bodied animals, vertebrates, tracks and burrows. Not less than 400 marks . A remarkable data set.
The incredible resilience of sea worms and shrimps
Analyzes conducted by the researchers show that it took about 3 million years for hardy invertebrates to recover from this mass extinction event. and trace their past demographics. Deposit Feeders — Name the species that feed on this or worms, thus first recovered. Suspension feeders — those that feed on material in suspension — have a tough time.A bottom-dwelling organism — etc
Researchers also suspect that the success of the former has put the latter in trouble. This caused the shrimps and worms to stir up the seabed so much that their suspension eating cousins struggled to regain their balance in this muddy water.
But researchers imagine that invertebrates are, thanks to the backlash they face — known to our planet at the time –, may have played an important role in the reestablishment. After other great destructions. Perhaps by stimulating subsequent evolutionary discoveries.