How many years has the history of mankind been there?

According to scientists' estimates, the age of the universe is about 15 billion years. The earth, on which human beings depend, has been rotating in the universe for 4.6 billion years. The history of living things is at least 3.3 billion years, while the history of humans is about 3 million years.

The Archean period, about 3.3 billion to 2.5 billion years ago, was the beginning of life. In the middle of the Archean period, the earliest organisms, prokaryotic cells, appeared.

About 2.5 billion years ago to 600 million years ago, the Proterozoic period, life began to flourish. In the early Proterozoic, eukaryotic algae appeared, and in the late period, primitive coelenterates, mollusks, and arthropods began to appear.

About 600 million years ago, the Paleozoic Era, 100 million years ago, was the era of biological greatness. In the Cambrian period of the Paleozoic Era (about 600 million years ago), invertebrates appeared, and seaweeds began to flourish; In the Ordovician period (about 500 million years ago), vertebrates appeared, and marine invertebrates began to flourish; In the Silurian (about 100 million years ago), fish appeared and plants began to land; In the Devonian period (about 400 million years ago), amphibians appeared and fish began to flourish; Primitive reptiles appeared in the Carboniferous period (about 100 million years ago), and amphibians began to flourish; In the Permian period (about 100 million years ago), reptiles similar to mammals appeared.

About 100 million years ago - 70 million years ago, the Mesozoic Era was the age of reptiles. The earliest dinosaurs appeared in the Triassic (about 100 million years ago); In the Jurassic period (about 100 million years ago), the earliest mammals and birds appeared, gymnosperms flourished, and dinosaurs flourished; In the Cretaceous period (about 100 million years ago), marsupials and placenta mammals appeared, the earliest flowering plants appeared, and dinosaurs dominated the world.

The Cenozoic Era, which is about 70 million years ago, is the era of mammals and humans. In the Paleocene (about 70 million years ago) of the Tertiary period of the Cenozoic Era (about 70 million years ago to 3 million years ago), advanced mammals were born; The earliest primates appeared in the Eocene (about 60 million years ago); In the Oligocene (about 40 million years ago), monkeys and apes arose among primates; During the Miocene (about 25 million years ago), Australopithecus spread across Eurasia; By the Pliocene (about 12 million years ago), Australopithecus gradually transformed into humans. The Quaternary period of the Cenozoic Era (about 3 million years ago to the present) is the era of mankind.

In the Pleistocene of the Quaternary (about 3 million years ago), hominids began to evolve into modern humans. Humans developed from the higher primates of Australopithecus.

Humanity goes through four stages of development after becoming a fully formed person.

One is the early ape-man, also known as the capable man. Appeared between 3 million and 2 million years ago.

The second is the late ape-man, also known as Homo erectus. Its age ranged from about 1.8 million to 230,000 years ago.

The third is early Homo sapiens, also known as the ancients. It lived between 200,000 and 40,000 years ago.

The fourth is Late Homo sapiens, also known as Homo sapiens. Appeared 40,000 years ago to the present. Late Homo sapiens is modern humans.

This is a question that has not been settled in the scientific community so far, and human beings have a history of about two to three million years

1) Humans originated from apes, about 5 million to 8 million years ago, some chimpanzee-like ape species successfully evolved into Australopithecus australopithecus in Africa, and australopithecus was called "man in the making" by anthropology, and the history of hominids began from this;

2) About 1.5 million to 2.5 million years ago, one of the tribes of Australopithecus evolved into homo sapiens and first appeared on the east coast of Africa.

3) The anthropological term for "fully formed man (Homo sapiens)" appeared about 30,000 to 250,000 years ago.

Human history is now recorded over 6 million years. Humanity goes through four stages of development after becoming a fully formed person.

One is the early ape-man, also known as Homo sapiens, which appeared between 3 million and 2 million years ago.

The second is the late ape-man, also known as Homo erectus. Its age ranged from about 1.8 million to 230,000 years ago.

The third is early Homo sapiens, also known as the ancients. It lived between 200,000 and 40,000 years ago.

The fourth is Late Homo sapiens, also known as Homo sapiens. Appeared 40,000 years ago to the present. Late Homo sapiens is modern humans.

Re-analysis of a skull dating back 100 million years revealed that it was a modern jawed vertebrate.

This means that the jaw and mouth animals include tens of thousands of surviving species of vertebrates, reptiles, from fish to birds.

mammals and humans, etc. The genus Echinosa was present in the earliest sharks and bony fishes.

Beginning in the pre-evolutionary period of their respective periods, this lineage eventually continued into human life.

Scientists have been in Europe, North America.

and the discovery of Acanthus fossils in Australia. Compared to other spiny sharks, it is relatively large, a foot (about a meter) long, they have gills instead of lungs, and they have large eyes that are plankton. for food.

Human history is now recorded over 6 million years. Since the 80s of the 20th century, many human fossils have been found around the world, the most important of which are: Australopithecus (an ancestral subspecies) was discovered in the Alpha lowlands of Ethiopia from 1992 to 1995, 4.4 million years ago.

In 1998, another, more ancient subspecies (ancestral subspecies) of Australopithecus was discovered in the same place, dating from 5.2 million to 5.8 million years ago. In 2000, 6 million-year-old hominins were discovered in the Tugen Mountains of Kenya, Africa, and because they were discovered on the occasion of the millennium in the year 2000, they are often referred to as millennials. Thus, the history of mankind has been recorded for 6 million years now.

Human history is now recorded over 6 million years.

Since the 80s of the 20th century, many human fossils have been found around the world. The most important of these are the discovery of the Aphyllum ape (a subspecies of Archaeopteryx) in the Alpha lowlands of Ethiopia from 1992 to 1995, 4.4 million years ago.

In 1998, another, more ancient subspecies of the terrestrial ape (the ancestral subspecies) was discovered in the same area, dating from 5.2 million to 5.8 million years ago.

In 2000, the 6 million-year-old primitive man (Tugen species) was found in the Tugen Mountains of Kenya, Africa, and is commonly known as millennial because it was found in 2000 at the turn of the millennium. Thus, the history of mankind is now recorded for 6 million years.

The appearance of apes

The appearance of apes can be traced back to the geological Oligocene. The earliest known ape is the proto-superior ape discovered in Fayon, Egypt, in 1911 and lived 35 million 30 million years ago. Slightly later than the proto-ape is the Egyptian ape discovered in Fayon in 1966 and 1967, which lived about 28 million to 26 million years ago.

Earlier, there are the forest Australopithecus, first discovered in Saint-Goudin in France in 1856, and later found in many parts of Europe, Asia and Africa, with a life age of about 23 million 10 million years. It is likely that these australopithecus were the common ancestors of modern apes and modern humans.

On June 6, 2013, the top international academic journal "Nature** published the results of Ni Xijun, a researcher at the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences, and others, who analyzed a series of morphological characteristics of one of the oldest primate fossils after 10 years of research, thus proving that apes originated about 55 million years ago.

Previously, the earliest ape fossils discovered by the scientific community came from 45 million years ago, and this achievement pushed the history of human ancestors by 10 million years, which can be called a milestone in the history of primate and paleohuman research.

Human history is now recorded over 6 million years. Humanity goes through four stages of development after becoming a fully formed person.

1.Early ape-man, also known as Homo sapiens, appeared between 3 million and 2 million years ago.

2.Late ape-man, also known as Homo erectus, lived from about 1.8 million to two or three hundred thousand years ago.

3.Early Homo sapiens, also known as homin, lived between 200,000 and 40,000 years ago.

4.Late Homo sapiens, also known as Homo sapiens, appeared 40,000 years ago to the present. Late Homo sapiens is modern humans.

Hope this helps you.

Human history is now 250,000 years old.

Homo sapiens (scientific name: homo sapiens), also known as humans, is the only living species in the genus Homo. The morphological characteristics are more advanced than those of Homo erectus. It is divided into early Homo sapiens and late Homo sapiens.

Homo sapiens distinguishes itself from other living apes by having a significantly enlarged brain, relatively reduced hair cover for most of the body, and a range of bones and muscles that adapt to habitual bipedal movements, including foot structures that lose the ability to grasp. It is a terrestrial biped with limited ability to swim and dive and must be learned.

Exhibits strong changes in body size and proportions, as well as pigmentation, some of which may be related to the wide range of environments in which Homo sapiens lived. Exhibits moderate sexual dimorphism in body shape.

Human history refers to the history of the emergence and development of human beings. The history of mankind is constantly changing with the development of science and technology and the discovery of ancient human fossils. Human history can be divided into prehistory and civilization history.

Homo sapiens are opportunistic omnivores that have shown remarkable ingenuity in extracting, producing, processing, and preserving food. Humans are the only species that can be controlled or **, and all known living human groups are cooking.

Regional differences in diet are influenced by availability in specific contexts, cultural traditions such as food preferences and avoidance, and genetic factors. The persistence of lactase allows some people to consume milk and dairy products throughout their lives, a recent adaptive adjustment to dairy consumption, which will only work in populations with a tradition of dairy farming.

Homo sapiens is the most widespread species of terrestrial mammals, inhabiting every continent on Earth (although there are no permanent settlements in Antarctica).

Homo sapiens was able to reproduce throughout the year. Dioecious, in vivo fertilization, viviparity, gestation period averages 40 weeks. There is usually a single offspring produced, and although twins are occasional, multiple births are rare.

Birth intervals, birth weight, weaning time, independence, and sexual maturity all vary greatly with the nutritional status of mothers and young people, and are influenced by cultural practices.

More than 3 million years.

The Javanese ape-man, together with the Peking ape-man discovered in Zhoukoudian, China, in 1927, was once recognized as the "earliest" human in the world.

At that time, it was believed that the history of mankind was no more than 100,000 years old, and the first human beings appeared in Asia.

The Shandong Yiyuan ape man, discovered in China in 1981, belongs to the same era as the Beijing ape-man.

However, this theory of the earliest origin of human beings has been overturned by two archaeological discoveries in China.

After the liberation, archaeologists successively found ape-man fossils in Lantian in Shaanxi Province and Yuanmou in Yunnan Province.

The Lantian ape-man is 1 million years old, and the Yuanmou ape-man is 1.7 million years old.

So, how long is human history? In the past two or three decades, archaeologists have discovered many ape-man fossils on the African continent, giving us a new understanding of human history.

In 1959, an almost complete fossilized ape-man skull and labor tools were found in Tanzania, dated to 1.75 million years ago.

In 1972, ape-man skulls, leg bones and stone tools were found in Kenya and dated to 2.6 million years ago.

In 1973, it was reported that fossils of ape-man were found in Ethiopia about 3 million years old or 3 million years ago.

From this point of view, human history is not 800,000 years, nor 1.7 million years, but more than 3 million years.