What are the paleozoic animals?
paleozoic animals lived during the paleozoic era, which is a huge section of time dating from the beginning of the Cambrian period, 542 million years ago, to the catastrophic extinction of Permia, about 251 million years ago. The era includes six geological periods and from the youngest to the oldest are: Cambrian, Ordovician, Silurian, Devonian, Carbonferous and Permian.
Paleozoic was a time of extreme evolutionary change and the foundations of life, as we know that it was determined during this period. Immediately before the paleozoic, there were few, if any animals with hard shells, and if we know, there were no plants or animals. The largest early paleozoic animal was probably no more than a few centimeters in length, because earlier Ediacaran communities, which consisted of simple organisms similar to leaves to length, mostly died out. Trilobites were among the first animals they hadAnd hard shells, and their fossils are so large that you can buy them today at eBay for $ 10 (USD) or less. Even the earliest trilobites had folded eyes with calcite lenses, which is characteristic unique to the group. For the time being, it was an impressive evolutionary innovation.
about ten million years to paleozoic, probably the most important evolutionary radiation in the history of life - has occurred - a Cambrian explosion. The Cambrian explosion is given by its name because of the geologically sudden appearance of virtually all modern phylls, even vertebrates represented by the first fish without the jaw that would be successful for tens of millions of years until it was replaced by headfish in Ordovicika.
Other iconic paleozoic animals are Eupterids, Sea Scorpions, who were career predators for virtually the entire paleozoic era, only extinct at the end. These scorpions are descendants of modernThe scorpions and some, such as the jaekelopterus , exceeded the length of two meters. Although many paleontologists are likely to be disappointed that Eupterids are not in the studio, most Beachgoers would probably prefer to remain extinct.
PaleoZoic has seen the development of the first earthly flora and fauna that quickly covered most of the earth's land during this period. Soil plants have evolved from green algae, initially only a few centimeters high until vascular tissue developed, then they became a few feet high. After the development of real wood, plants could really "relax", growing many tens of meters high by the second part of the paleozoic. These plants of the land were connected by many paleozoic animals that evolved the ability to walk on the ground and represent independent lines of invertebrates (mostly insects and cheelicerates such as mites) and vertebrates (fish began to walk on the ground and became amphibians). At the end of the period there were so many paleozoic animals accompanied by paleozoicThe flora that complex earthly ecosystems were roughly analogous to those of all future era.
The paleozoic era closed with a catastrophic demise that erased 97% of seabed families and 70% of terrestrial vertebrate families.