What is the Cambrian Revolution substrate?

The

Cambrian Revolution of the substrate was a key evolutionary event that occurred at the dawn of the Cambrian period 542 million years ago. The revolution consisted of the first shocks that plunged deep into the substrate, rather than grazing on the surface or just below the microbial mats that at that time dominated the seabed. In fact, the beginning of Cambian is internationally defined by the first performance of the trichophycus pedum , the ubiquitous trace fossil with a distinctive loop pattern. Burrower, who created a fossil trace fossil, is unknown, but it could be a slug or a primitive member. The animals lived on the mat, attached to it via Holdfasts, grazing to the surface of the mat, embedded in or immediately below it. Because the substrate below it was almost completely yesoxic (without oxygen), it was a filh with bacteria reducing sulphates that radiated sulphide, poisonous to most other organisms that discouraged them from deep gaming.

After billions of years of substrates dominated by bacteria reducing sulphates, several pioneering organisms began to break deeper into the substrate, which was more free and oxygenated. This began a cycle of feedback, when the substrate became less hostile to animals and the animals in it more aggressively took over the initiative of playing and consumed bacteria and other animals that colonized the newly oxygenated environment. The final result was the development of a wide range of counting organisms and opening a new oceanic niche. Cambrian explosion, a massive event of evolutionary radiation that occurred soon after the revolution of the Cambrian substrate, could contribute to oxygenation of the upper substrate layer.

There are three primary advantages for playing that would accelerate the revolution of the Cambrian substrate as soon as it started: available food, anchoring (KTEré prevented to wash the animals in streams) and avoid predators. Since predators tend to be greater and less maneuverable than small animals, few of them would throw away into a muddy substrate. The Cambrian substrate revolution was the beginning of the end for microbial mats, which now occur only in an extreme environment inhospitable for shocks, such as brine lakes and the deepest reaches of the ocean DNA.