What are taxa disasters?

Taxa disasters are groups of organisms that relocate areas destroyed by natural disaster, such as volcanic eruption, or survive a large mass extinction. Classic examples are mushrooms and lichens that are among the first to colonize the areas of disasters, and microscopic animals used to life in almost every conceivable ecosystem such as non -game. In the case of taxa disasters that survive mass extinction, they can serve as a basis for new adaptive radiation and their ancestors will have features derived from them. Permian-Triassic extinction (most serious in history, occurring 251 million years ago) accounts for 95% of all ground vertebrate fossils. This is considered the only time in the planetary history in which the organism dominated the earthy degree. Named Lystrosaurus , which means a "shovel" blade "for a shovel -shaped head, an animal had a barrel -shaped chest and was about the size of a pig. While some paleontologists attribute their survival the ability toEven the harmful gases in the atmosphere at that time, others call it stupid happiness.

Recently, immediately after the extinction of chalk, which erased the non -Non -Nanian dinosaurs, small mammals were lucky to be the primary taxa disaster among earthly vertebrates. Given that almost all dinosaurs were deleted, it left many empty niches to make the mammals to use, which is nowadays. Previously, most mammals were small and uniform, reminiscent of a small scattering, but then they quickly diversified and today ranges from several inches (mice) to 110 feet (blue whale).

As well as for catastrophe taxa, which inhabit the dementi areas most common today are coconut plants, the above mushrooms and lichens, mosses and small membership. Most animals require a complex ecosystem rich in leaves to be successful.