age
event
4.57 billion years ago
The earth was formed by an accretion disk revolving around the early sun.
4.533 billion years ago
According to the big collision hypothesis, the primitive earth collided with Teia, forming a ring around the primitive earth, which formed the moon millions of years later. The pull of gravity tilts the earth's axis of rotation, establishing the formation environment of life on the earth. [ 1]
4 1 100 million years ago
The decrease of the earth's surface temperature makes the crust solidify and the atmosphere and ocean form. [2]
4 billion years ago
Main project: the origin of life
The earliest life may have originated from self-replicating RNA molecules. The resources needed to reproduce these lives are limited, so the competition will soon begin. Because natural selection tends to replicate more efficient molecules, DNA has gradually become the most important copy. After that, they began to develop in the membrane, which had a more stable physical and chemical environment and formed primitive cells. There is no free oxygen in the atmosphere at this time.
3.9 billion years ago
Late heavy bombing period: the peak period when the earth, moon, Mars and Venus are hit by asteroids and comets (asteroids). Continued interference may induce the evolution of life (see embryonic species theory), and the ocean will boil completely. [3]
Cells and prokaryotes appear. These are chemokines: carbon dioxide is used as carbon source, and inorganic substances are oxidized to extract energy. Later, prokaryotes evolved glycolysis, releasing energy from organic substances such as glucose. Glycolysis produces adenosine triphosphate (ATP), which is used by all living things to temporarily store energy today.
Archean. Also known as AZOIC
Main projects: Archaean
age
event
3.5 billion years ago
Finally, * * * appeared with ancestors, and bacteria and archaea split. Bacteria developed the primitive mode of photosynthesis, but they didn't produce oxygen at first. These organisms produce adenosine triphosphate through electrochemical gradients.
3.3 billion years ago
Cyanobacteria capable of photosynthesis appear. They use water as a reducing agent to expel oxygen. Oxygen first oxidizes iron in the ocean to produce iron ore. The concentration of oxygen in the atmosphere is rising, which is toxic to many bacteria.
Proterozoic era
Main projects: Proterozoic.
age
event
2.5 billion years ago
Some bacteria have evolved the ability to extract energy from organic matter effectively by using oxygen. Almost all living things use oxygen through the same tricarboxylic acid cycle and oxidative phosphorylation. The "runaway icehouse" effect [4] led to the Huron Ice Age. [5]
2 1 100 million years ago
More complex cells have emerged, including eukaryotes with organelles. The closest thing is probably archaea. Most organelles may come from bacteria: mitochondria extract energy from organic matter like Rickettsia today, while chloroplasts synthesize energy from light and organic matter. This is an example of * * * coevolution.
65.438+200 million years ago
Sexual reproduction occurs, triggering faster evolution. [6] Most life occurs in oceans and lakes, and some cyanobacteria have already lived in moist soil.
654.38 billion years ago
Multicellular organisms appear, first of all, algae and seaweed living in the ocean. [7]
11-750 million years ago
The formation and subdivision of the first supercontinent Rodinia. [8]
950 million to 780 million years ago
Stuart Ice Age: This period is a multiple and almost global ice age, from snowball earth to greenhouse earth.
900 million years ago
There are 48 1 day and 18 hours every day every year. The rotation and revolution of the earth were gradually slowed down by tidal force.
750 million to 580 million years ago
According to the snowball earth hypothesis, the Precambrian ice age was so severe that even the ocean was completely frozen, and seawater remained liquid only in tropical areas.
600 million years ago
There are multicellular animals such as porous animals, echinoderms and flatworms in the ocean. (But some studies also show that the earliest animals lived in the environment of lakes [9]. Spinous process and ctenophore are the earliest creatures with neurons, which are just a simple net without brain or central nervous system.
600 million to 540 million years ago
Formation and division of the second supercontinent pan-ocean. [ 10]
580 million to 540 million years ago
The accumulation of oxygen makes the ozone layer form. [1 1] and the ozone layer can block the harmful radiation of the sun and make life develop on land. [ 1 1]
565 million to 525 million years ago
The CAMBRIAN explosion produced the main phylum of all modern animals, and the reason is still questionable. Arthropods dominated by trilobites are the most important phylum. Chordata may be the ancestors of human beings. Kiki shrimp is a 2-meter-long predator and its offspring may be sea spiders. [ 12][ 13][ 14]
Phanerozoic [editor]
Main project: Phanerozoic
Phanerozoic is a period when a large number of biological fossils began to appear 570 million years ago.
Phanerozoic indicates that extraordinary creatures appeared on the earth during this period. And those times when creatures are invisible or hard to see are called hidden times.
Palaeozoic Era
Main project: Paleozoic
age
event
530 million years ago
The first footprint on land. [ 15]
505 million years ago
The appearance of the first vertebrate crustaceans is related to today's octopus and blind eel. Haikou fish and Kunming fish are both jawless fish or footless fish.
488 million years ago
The first extinction of biota occurred between CAMBRIAN and Ordovician, which was a CAMBRIAN-Ordovician extinction event.
480 million years ago
Archaeologists from the University of Valencia discovered fish fossils 480 million years ago in teruel, south of Zaragoza. Echinococephalus Koch, a new fish species, lived in Devonian and was also an early extinct fish. [ 1]
475 million years ago
The first primitive plant evolved from green algae [16] and migrated to land [17] to grow along the lake. There are fungi with them. Maybe both plants and fungi are * * *, and lichen is an example of * * *.
450 million years ago
Arthropod exoskeleton can support the body and prevent water loss [18], and it is the first animal to move to land. [19] The earliest Polypodiaceae (Ma Lu and centipede), followed by spiders and scorpions.
450 million to 440 million years ago
The Ordovician-Silurian extinction event was the second extinction of biological clusters.
400 million years ago
The first wingless insects appeared, namely octopus, jumping worm and fringe tail worm. The first shark also appeared. [20] The first coelacanth appeared. Before the living specimen was discovered in 1938, it was mistaken for extinct for a long time and was considered as a living fossil.
370 million years ago
Sharks are high-speed predators. [2 1]
365 million years ago
The late Devonian extinction event is the third extinction of biological clusters. Insects evolved from ground and fresh water polypods. Some freshwater fish have grown feet and become quadrupeds. Quadrupeds (ichthyosaurs, Spinosaurs and Pinpoda) landed on their feet, probably to prey on insects. Lung and swim bladder evolved. Today, amphibians still retain many characteristics of early quadrupeds.
360 million years ago
Plants have evolved seed structure, which can protect plant embryos and grow rapidly. Woodley pit and Xilinyang ring pit appeared.
360 million to 286 million years ago
The golden age of sharks. [22]
350 million to 250 million years ago
The Karo Ice Age began in the Early Carboniferous and ended in the Late Permian. Due to the pole shift, most of Gondwana is frozen from the centers of Asia and South America to the centers of India and Australia.
300 million years ago
Pangu continent was formed and maintained for 65.438+0.2 billion years. This is the last time that the continents on the earth will be closed together. The evolution of chorionic eggs has produced amniotic animals and reptiles, which can breed on the ground. Insects can fly and have many orders (such as archaea, megaptera, Transptera and Orthoptera). Odonata represents many early insects. Lycopodium, arthropods and spiny forests are mostly covered with land, and when they rot, they become coal and crude oil. Gymnosperms began to differentiate widely. Su Tiemen was the first to appear.
280 million years ago
The giant vein dragonfly of the primitive dragonfly is the largest insect, and its wings are as long as 2 feet. Vertebrates, including amphibians, detached cones, Carboniferous sauropods and crustaceans, early reptiles, foraminifera and foraminifera, such as Keelung.
256 million years ago
Two-toothed beast, small-headed beast, two-toothed beast, small beast, dinosaur and the original crocodile dragon appeared. They are a small group of many theropods living in South Africa and Russia. Serpentidae is a large herbivore. The first dinosaurs appeared.
250 million years ago
The Permian-Triassic extinction event killed about 90% of all animals, which was the fourth and most serious extinction of biological groups. After extinction, sauropods are the most common herbivores on the surface. Early dinosaurs evolved into other reptiles. Orthodontics evolved from kiwifruit and finally became the main fish. The oxygen content in the atmosphere has dropped to 65,438+00%, which is one third of that in the past. All animals with bubble breathing system are growing well. Spores of some Corynebacterium strains 2-9-3 were captured in salt crystals in New Mexico, and became active and divided again in 2000. Now they are the oldest creatures in the world. [23][24]
Mesozoic [editor]
Main project: Mesozoic
age
event
220 million years ago
The climate is very dry, and the early dragons and gymnosperms suitable for this climate benefited a lot. Early dinosaurs divided into crocodiles, dinosaurs and pterosaurs. In the genus Syngnathus, the first ancestor of mammals, theropoda, especially the true Canidae, evolved. At first, they were all very small. All mammals have mammary glands when they are young and can maintain a constant body temperature. One pair of autosomes obtained SRY gene (SOX3 gene from X chromosome) to become Y chromosome, and its length was also shortened. Gymnosperms (mostly conifers and cycads) are the main plants on land. Herbivores grow into huge bodies to digest these plants.
208-65438+44 million years ago
The second big expansion of sharks. [25]
200 million years ago
The Triassic-Jurassic extinction event happened for the fifth time. Reptiles in the sea include ichthyosaurs and plesiosaurs. Dinosaurs survived the extinction and grew into huge bodies, but the teeth died completely. Now amphibians, including Anura, Anura and earthworms, are beginning to appear. The conjoined viridae can be traced back to this period or earlier. [26]
65438+95 million years ago
At present, the oldest known mammal-Wu's giant skull beast has appeared.
65438+83 million years ago
The extinction of Tuoaerian occurred 654.38+83 million years ago [27] had the greatest impact on marine life, especially mollusks such as ammonites. [28]
65438+800 million years ago
Pangea began to split into several continents, the largest of which is Gondwana, which consists of Antarctica, Australia, South America, Africa and India. Antarctica is still a forest. For Lauea, North America and Eurasia were still connected at that time.
1.700 million years ago to1.600 million years ago.
The extinction of Apudia happened. According to the evidence in the stratum, the event has a great impact on marine life and a small impact on terrestrial life. [29]
65438+64 million years ago
Bijuu is a close relative of the oldest swimming mammal and a direct ancestor of mammals such as platypus and echidna. [Source Request]
65438+600 million years ago
This 3-meter-long multicolored crested dragon appeared in Xinjiang, northwest of China, and was the earliest Tyrannosaurus super family.
65438+500 million years ago
Giant dinosaurs are very common and varied, including Brachiosaurus, Bewildebeest, Stegosaurus, Allosaurus, Small Bird-loving Dragon and Osnier Dragon. Birds evolved from theropoda. Archaeopteryx is the ancestor of birds, with claws and feathers, but no beak.
65438+35 million years ago
After the Jurassic extinction, new dinosaurs appeared, such as Iguanodon and Lin Long. Microraptor Gu appeared in Liaoning, northeast of China. It is 77 cm long and has feathers similar to birds on its four wings.
65438+33 million years ago
Primitive Jehol birds appeared in the northeast of China. It has big and strong wings and a slender tail like a dinosaur.
65438+30 million years ago
Angiosperms have evolved flowers that can attract insects and other animals to spread pollen. The innovation of angiosperms leads to the evolution and co-evolution of animals; Tommy Tam lives in Manchuria, China, with feathers and a body length of 1.6m [30].
65438+25 million years ago
Now the ancestors of placental mammals climbed the ancestor beast, just like the Dormouse today. Parrot-billed dinosaurs were the ancestors of late horned dinosaurs.
65438+23 million years ago
The Millennium Chinese bird dragon has primitive feathers, but it is not used for flying. Other feathered dinosaurs include China's Bird Dragon and Great Wall Bird, whose common ancestor was Archaeopteryx. Other dinosaurs, including Spinosaurus Ankylosaurus and Tyrannosaurus Rex, appeared.
65438+ 20 million years ago
Only 25 cm wide forest pterosaurs appeared in Liaoning, China.
1. 1 billion years ago
The largest crocodile crocodile appeared, weighing 8 tons and being 12 meters long. Carnivorous dinosaurs include Deinonychus and Spinosauridae, and herbivorous dinosaurs include Sauroposeidon, Sauroposeidon and Sauroposeidon.
/kloc-0.0 million years ago
Giant sauropod dinosaurs and southern behemoths appeared.
88 million years ago
India and Madagascar split.
80 million years ago
There are many kinds of sauropods, platypus, Ceratosauridae and theropods. More than half of the known dinosaurs appeared in the last 30 million years of Mesozoic, and angiosperms began to appear after their growth. India began to move to Eurasia.
75 million years ago
The last * * * of humans and mice appeared with their ancestors. [3 1][32]
Cenozoic era
Main projects: Cenozoic era
age
event
66 million years ago
The Cretaceous-Tertiary extinction event wiped out almost half of the animal species (except birds), which may be caused by the impact of asteroids, which raised iridium dust, covered the whole earth, and caused the climate to become cold. Chicxulub crater appeared in Mexico. Without giant and diurnal dinosaurs, the diversity and size of mammals have increased. Some mammals returned to the ocean, such as whales, manatees and pinpods, while others began to evolve into flying, such as bats. A small insectivorous suborder that lives at night and inhabits trees, including primates, tree shrews and bats. Primates have binocular vision and grasp fingers, which can help them jump from tree to tree. Monkeys are an example. It went extinct 45 million years ago.
60 million years ago
Ancient Carnivora (probably the ancestors of fine-toothed mammals) appeared in the northern hemisphere and became extinct 5.2 million years ago. Titan snake is the largest known snake and lives in the tropical rain forest of South America.
55 million years ago
Australia broke away from Antarctica. The earliest true primates first appeared in North America, Asia and Europe, such as Simpson monkey in Wyoming, USA and German monkey in Yunnan, China. Mako sharks may be the ancestors of great white sharks. [33][34][35]
50 million years ago
Horses evolved from their ancestors. The ancestors of whales and dolphins, wandering whales, may walk on land like sea lions and swim in the sea like otters. It has webbed feet and listens to sounds with its ears. Pezosiren portelli is the ancestor of manatees today. He walks on land like a hippo and swims in the sea like an otter. Fine-toothed mammals, including small ancient cats, are the ancestors of all dogs, cats, bears, raccoons, foxes, hyenas, foxes and civets. They are carnivores and can climb trees like weasels. Modern ginkgo appears.
48.5 million years ago
The crested fear bird is a carnivorous bird, with a height of 1.75 meters, and is a top predator.
46.5 million years ago
Rodhou whale, the offspring of stray whales, is the ancestor of whales and began to stop drinking fresh water.
43 million years ago
Archaeopteryx appeared with a long nose, but no trunk or ivory.
40 million years ago
Primates are divided into prosimia and simple rhinosuborder, which are diurnal and herbivorous.
37 million years ago
Wang Long whale's hind limbs began to contract and found them intact, and hearing began to spread to the middle ear through the mandible. At that time, the whale valley in Egypt was in the water, and the Wang Long whale had no breathing holes, so it had to stick its head out of the water to breathe. Biretia fayumensis and Biretia megalopsis, the early ancestors of Protomonkey suborder, appeared in the desert of Egypt. [36]
35 million years ago
Gramineae evolved from angiosperms.
30 million years ago
Simple rhinoceros is divided into wide rhinoceros and narrow rhinoceros. Wide-nosed suborder has curly tail and migrated to South America. The male is color blind. The suborder Ceratoptera remains in Africa, and one of their ancestors may be Egyptian apes. Like lemurs today, Bugtipithecus inexpectans, Phileosimias kamali and Phileosimias brahuiorum live in the rain forest in Bugti mountain area in central Pakistan. The original red panda, the ancestor of all cats, lived in trees in Europe and became extinct 20 million years ago.
27.5 million years ago
Giant rhinos live in Mongolia.
27 million years ago
The long-legged crane died out in America 15000 years ago.
25 million years ago
Males with narrow noses can see colors and lose pheromones. [37] Stenoptera is divided into two subfamilies: monkey subfamily and hominid subfamily. Monkeys have no curly tails, and some even have no tails at all. All humanoid superfamilies have no tails.
22 million years ago
India collided with Asia, resulting in the Himalayas and the Qinghai-Tibet Plateau. Because it was isolated from moisture, Central Asia became a desert. Fear of elephants appeared and disappeared 2 million years ago. Some Xiong Ke animals (the ancestors of all bears) similar to dogs, bears and raccoons have appeared, which are only as big as foxes and use plants and insects to supplement meat. The first panda subfamily is divided into two parts, of which only the giant panda can survive to this day.
21100,000 years ago
Animals like meerkats drifted from Madagascar to Africa on a raft made of plants and became the ancestors of all carnivorous mammals there.
20 million years ago
Africa plate collided with Asia plate. Dogs are the ancestors of dogs, and the fifth claw is shortened, which has the shadow of the dog's upper claw today. They look like civet cats today. Their feet and toes are suitable for running. Canine and feline began to branch. The ancestor of the elephant, the ivory elephant, appeared.
19 million years ago
8,000 years ago, the ground sloth appeared and became extinct.
16 million years ago
The mako shark shows the early echolocation of whales. Megalodon is a huge shark, but it suddenly disappeared 654.38+0.6 million years ago. [38]
15 million years ago
Apes migrated from Africa to Eurasia and became gibbons and orangutans. Human ancestors evolved from gibbons. Orangutans, gorillas and chimpanzees all belong to hominids, while humans belong to hominids.
13 million years ago
Human ancestors were formed by orangutan ancestors. The relatives of orangutans set off for Lufeng, and the ancient apes appeared. The Piraú l ape in Catalonia may be the same ancestor of hominids and humans.
10 million years ago
The climate began to dry, and grasslands and grasslands replaced forests. The number of monkeys has soared, while the number of apes has decreased. Human ancestors were formed by the ancestors of gorillas. The horse was in its heyday and began to expand throughout the northern hemisphere. 654.38+million years ago, they declined because of the competition of Artiodactyls. Thomas is an animal like a dog.
Seven million years ago
The largest primate, the Great Ape, lived in China, Viet Nam and North India and became extinct 300,000 years ago.
5.6 million years ago
The Mediterranean dried up because of the salt crisis in Mycenae.
Five million years ago
Volcanic eruptions and many tiny lands connect North and South America. The migration of mammals from North America to the south led to the extinction of local mammals. Human ancestors were formed by chimpanzee ancestors. The last ancestor of * * * was an ape-man from Chad. The earliest branch of mankind is the Millennium people. Chimpanzees and humans have 98% similar DNA, but heme differs only by one amino acid. A class of chimpanzees may be more genetically diverse than all 6 billion people today, but then there was a bottleneck in the human branch. The larynx of chimpanzees and humans has been relocated to the middle of the pharynx and lungs, which shows that both ancestors have the characteristics of the predecessor of this language.
4.8 million years ago
There are chimpanzee-sized apes in Terran, standing and walking.
3.7 million years ago
Some Australopithecus left footprints on volcanic ash in Kenya.
3.5 million years ago
The great white shark appeared.
Three million years ago
Biped Australopithecus evolved in the African savannah and was hunted by Phobos. Australopithecus africanus and Australopithecus bowman, as well as other genera including Plankton in Kenya, appeared. Gorillas disappeared on the south bank of Congo River. North and South America are connected and there is a great migration between North and South America. Horses appeared for the first time today. Elephant phobia has downward ivory on its chin.
2.5 million years ago
The sword tiger appeared.
2.2 million years ago
Gorillas split into western gorillas and eastern gorillas.
Two million years ago
People who have the ability to use primitive stone tools in Tanzania may live with Robb's people. Broca district appeared. Humans eat meat, and humans eat plants and termites. Some chimpanzees south of the Congo River are classified as bonobos, and they live in a society dominated by women. The sword tiger traveled from North America to South America.
65438+800,000 years ago
Homo erectus evolved in Africa and migrated to other continents, mainly South Asia.
65438+750,000 years ago
Grus have the characteristics of homo erectus and homo habilis. This toothed beast lives in southern Peru.
65438+600,000 years ago
Giant short-faced kangaroos appeared in Australia and disappeared 40 thousand years ago. This wombat-like animal with beautiful patterns and two front teeth appeared in Australia and became extinct 45,000 years ago.
65438+500,000 years ago
Orangutans split into Borneo orangutans and Sumatran orangutans. The marsupial lion appeared in Australia and became extinct 46,000 years ago.
/kloc-0.0 million years ago
Canines are separated from round-tailed apes. Gray fox is the most primitive dog genus today.
800 thousand years ago
Gray wolves migrated to the polar regions of North America.
780,000 years ago
The Earth's Last (Recent) geomagnetic reversal.
700,000 years ago
Humans and Neanderthals have the same genetic ancestor.
500 thousand years ago
Homo erectus used charcoal to control fire, but he still didn't know how to make a fire.
400 thousand years ago
The eastern gorillas are eastern lowland gorillas and mountain gorillas. The bighorn deer appeared and became extinct 9500 years ago.
355,000 years ago
Heidelberg people left their footprints in Roccamonte Fina volcano in southern Italy, which is the earliest human footprint.
250,000 years ago
Polar bears evolved from brown bears.
195000 years ago
The Omo fossil remains of Omo River in Ethiopia are the earliest human beings.
65438+600,000 years ago
Homo sapiens practiced etiquette and slaughtered hippos.
65438+500,000 years ago
Mitochondrial Eve lives in Africa. She is the last female ancestor of all modern humans.
65438+300,000 years ago
Neanderthals evolved from Heidelberg people and lived in Europe and the Middle East. They began to bury the bodies and take care of the patients. They have hyoid bones and can use spears. FOXP2 gene appears.
654.38 million years ago
The first human evolved from Heidelberg and appeared in Africa. Humans live in South Africa and Israel. There are two ways for human beings to enter Asia: going north through the Middle East, going south from Ethiopia, passing through the Red Sea and the southern Arabian Peninsula (see the theory of single source). Mutations lead to skin color changes to absorb the most effective ultraviolet rays. Race began to form. The population genes in Africa are still relatively differentiated.
82,500 years ago
Humans use sharp animal bones to fish.
80 thousand years ago
Humans make harpoons in Congo.
74,000 years ago
The Doga Catastrophe Theory refers to the eruption of the super volcano in Doga Lake, with a human population of only 2,000. There was no summer for 6 years, followed by 1000 ice age. Volcanic ash reached a depth of 5 meters, covering India and Pakistan.
70 thousand years ago
The most recent ice age, the Wisconsin ice age began. Humans made tools and painted murals with bones in the Blombos Cave. They also collect shells and drill holes to make necklaces. Giant otters appeared and disappeared 1 ten thousand years ago.
60 thousand years ago
Y chromosome Adam lives in Africa and is the last ancestor of human male Y chromosome.
Fifty thousand years ago
Humans extend from Asia to Australia and Europe. The coastline extends faster than the inland. Hairy rhinos live in the British Isles.
40 thousand years ago
Krohmann Yunus painted and hunted mammoths in France. They have special cognitive ability, which makes them at the top of the food chain. The extinction of giant marsupials in Australia.
32,000 years ago
There is the first sculpture in Foghead, Germany. France has the first flute made of bird bones. Indonesia has stone tools.
Thirty thousand years ago
Humans entered North America from Siberia in several waves, and later entered through the Bering Continental Bridge. In the early days, they may enter the Aleutian Islands through island jumping tactics. Europeans crossed the Atlantic to North America. Humans went to Solomon Islands and went to Japan. The Sahara used bows and arrows, and the first ceramic animal model appeared in Moravia.
Twenty-eight thousand years ago
The oldest pictures appeared in Namibia, Africa. [39] The oldest penis sculpture appeared in Germany. [40]
Twenty-seven thousand years ago
Neanderthals disappeared, leaving only humans and flores. Textiles appeared in the Czech Republic.
Twenty-five thousand years ago
Javelin was invented with the ivory of mammoth.
From 24000 BC to 22000 BC.
Venus of Willendorf belongs to this period. [4 1]
Twenty thousand years ago
Humans left footprints and handprints on the Qinghai-Tibet Plateau. Use animal fat to make oil lamps. Neanderthals sewed animal ornaments with bone needles. Mammoth bones build houses in Russia.
65438+800,000 years ago
Flores appeared in distant Indonesia.
65438+500,000 years ago
At the end of the last ice age, the sea flooded the whole world, causing many coastal areas to be flooded and dividing the former mainland into islands. Japan is separated from Asia, Siberia is separated from Alaska, Tasmania is separated from Australia to form Java Island, and Sarawak, Malaysia and Indonesia are separated. Some people develop agriculture and cities in the fertile crescent of the Middle East. Because of producing food and raising animals, the world population has soared. Cave paintings appear in Laskirk Cave and Caracas.
65438+400,000 years ago
Since the Holocene extinction, more than 65,438+000 species of large mammals have disappeared, which may be caused by the soaring population of the world.
1.65438+500,000 years ago
The sword tiger is extinct.
1. 1 ten thousand years ago
Flores and mammoths are extinct. Humans first raised Indian wolves. Today all dogs belong to domestic dogs.
1400 years ago
Started planting plants and farming in the Near East. The population of Jericho is 19000.
Before 8000 BC
There are still rivers, lakes and monsoons in the Sahara. Japan made the earliest ceramic container in the world in the rope age. Man arrives in punta arenas, South America. The world population is 5 million [42].
Six thousand years ago BC
Wheat is grown in southwest Asia, Syria, Jordan, Turkey and Iraq.
Before 4500 BC
Grow Asian rice and African rice.
BC 1200 years ago
Iron appeared in the Middle East and Southeast Europe, and mankind began the Iron Age. [43]
BC 1000
The world population is 50 million. [44]
500 BC
The world population is 1 100 million. [45]
1 year
The world population is 200 million. [46]
AD 1627
The last bull was shot by a Polish hunter at 1627, which declared the bull extinct.
Between 1662 or 1688-17 15.
The dodo is extinct.
Advertisement 18 15
On April 10, Mount Tambora in Indonesia erupted. Its volcanic ash covered almost every corner of the world, and the global temperature dropped by about 5℃, which triggered the famous 18 16 "year without summer". [47]
AD 1835
The world population is 654.38+0 billion.
AD 1952
The extinction of the Caribbean monk seal-The last record of the Caribbean monk seal was in Little Serana Island in 1952. [48] In 2008, the US government announced that they were extinct after five years of searching. [49]
AD 1969
Neil armstrong officially walked on the moon at 02:56 (Universal Time) on July 26th, February/KLOC-0. [50]
In 2005.
Amazon forest experienced the worst drought in 100 years [5 1].
the year of 2008
Functional extinction of baiji; The world population is about 6706993000. [52]
A.D. 20 15
The world population exceeds 7 billion. Holocene extinction events are still going on, with an upward trend in the last 50 years.