Economy

The Age of Primitive Creatures Story

Although geologists have divided time in the past in the world into three eras, but in Archeopteryx and Prosozoic era only small, low living organisms. And there is not much evidence of fossils as plate tectonics cause the formation and destruction of plates Most rocks on Earth are under 500 million years old , so geologists call the period of the two bromes, the Precambian period, which refers to the period before the Cambian and divided periods. The time of the Fenero Rosario was divided into 3 eras, divided into 11 eras, based on distinct fossil types.

Prescott took Camping (Precambrian) is the time since the world was born until 545 million years ago in the Archeochoic and Proteozoic era, where fossils appeared very little. The oldest sedimentary rock is found in Greenland, 3,800 billion years old. The oldest fossil is The ancient bacteria are 3.5 billion years old.

Cambrian was the first era of the Era. Paleozoic in the period 545 to 490 million years before the great continent gathered in the South Pole. Is the era of bacteria and green algae The ground is still empty Animals with carapace that live in the sea, such as Tyrannosaurus, bivalve molluscs, sponges and snails. Most plants are seaweed.

Ordovician

In the period 490 – 443 million years ago, the amount of carbon dioxide increased dramatically. Castro’s Master Lite dwindling birth coral Bryozoa and squid, marine animal breeding into the shallow waters. The first vertebrates occurred. Fish without jaws and first spores of land plants.

Silurian

In the period 443 – 417 million years ago, deep-sea creatures that use chemical energy from volcanoes under the sea. (Hydrothermal) is a nutrient. The first jaw and land animals were born. On land there are plants that propagate with spores.

Devonian

In the period 417 – 354 million years ago, North America, Greenland , Scotland and Europe together. Is an age of primitive fish The fish has a large number of gills. The first carapace , shark, shellfish (Ammonite) and insects occurred. On land began to have plants that propagated with seeds and forests occur.

Carboniferous

In the period 354 – 295 million years ago, was the era of giant fern forest covering the creek, swamp, canal, swamp, which has become an important crude oil source today. There are breeding insects. And the amphibians Began with the evolution of reptiles Pine family.

Permian

It is the last period of the Paleozoic Era. During the period 295 to 248 million years ago, the crust of the continent formed a large continent named ” Pangaea”. In the sea, there is a coral reef and biosaure. On land, breeding of reptiles that resemble mammals. In the end of the Pomeranian period, mass extinction was lost. Both land and sea creatures disappeared. 96 % of species are considered Paleozoic Eclipses.

Triassic

It was the first era of the Mesozoic era. Between 248 – 205 million years ago, it was the beginning of new animals. Reptiles that resemble mammals Replaced by animals that were dinosaurs The land is not fertile to the growth of plants. Most vegetation is full of cycads and ferns.

Jurassic

It was the Middle Ages of the Mesozoic Era in the period 205 – 144 million years ago, when the dinosaurs dominated the world. Flying dinosaurs Began to develop into poultry birds Plants in the forest are still plants without flowers. Ammonia shells have developed widely and evolved into an octopus.

Cretaceous

It is the last period of the Mesozoic Era in the period 144 – 65 million years ago. Emerging organisms include snakes, birds and flowering plants. Dinosaurs evolved to have dorsal fins and thick skin for protection. At the end of the Cretaceous period, there was a great extinction. Dinosaurs are extinct. About 70 percent of other species are extinct . It is assumed that comets hit the Earth in the Yucatan Peninsula in the Gulf of Mexico. This event is called “KT Boundary”, which refers to the boundary between the Cretaceous and the Territory.

Territory (Tertiary)

As early eons Seno Associates Ignatius in the range of 65 to 1.8 million years ago the earth , America is moving toward the earth , India moves toward the earth, Asia, causing the Himalayas and the Tibetan Plateau, the Terry Shea tree is divided into two days is. Paleogene and Neogenez.

  • Highland China (Paleogene) is the first of the chain Seno Ignatius is in the range 65-24 million years ago, animals, mammals, breeding replaced the dinosaurs. With both herbivores and carnivores The land is full of forests and grasslands. Whale in the sea
  • Neo-China (the Neogene ) in the range from 24 to 1.8 million years ago was a time of new animal models which is the predecessor of today. Including two-legged monkey, the ancestor of humans (Homo erectus)

Quaternary

It is the last era of the Sono-Eoic era in the period of 1.8 million years ago to the present, divided into 2 periods which are Pellezone and Holosine.

  • ISuppli’s Big Scene (Pleistocene) in the last 1.8 million years – one thousand years caused the ice age of 30, the northern hemisphere is covered with ice. Makes Siberia and Alaska connected With curved tigers, elephants, mammoths and cave bears . Human ancestors have occurred in the Homo sapiens species, about two hundred thousand years ago
  • Holocene (Holocene) since the end of the Ice Age, when the one thousand year to date as modern human factors knowledge of agriculture , animal husbandry and industry. All forests in Europe have been destroyed. Tropical rainforests are about to disappear.

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