What is the whale family? What is the ancestry of whales?

Each "grandmother" is raised from a cub and is born into their mother's family, or rather, a matrilineal clan. Family members get together to live, hunt and play, and even communicate through another unique tweet. Whale calves and females live in their matrilineal families throughout their lives.

It just doesn't mean that the young whale only interacts with its relatives. With the exception of a few special tweets, a matrilineal clan usually shares a dialect with neighboring families, so that their members can socialize. When the female whale reaches the age of 15, this kind of neighborhood gathering becomes an opportunity for her courtship.

This cross-family relationship is usually always for mating, and after mating, the females and males return to their mothers, respectively. From 15 to 40 years old, females give birth to an average of six years every six years. And then it's menopause, which is pretty much the same in the animal kingdom.

In fact, only humans, killer whales and some other cetaceans females, survive menopause. After menopause, the grandmothers led the family in salmon hunting, the staple food of the "Southern dwellers".

Earlier, scientists found fossils of "land whales" in the Eocene period, indicating that land whales are distributed in today's Pakistan, it is the ancestor of whales, and whales are mammalian carnivores, it can eat both salt water and drink fresh water, it has no external ears, it tracks its prey by listening to sounds underwater, it often puts its head close to the ground to feel the vibration, to identify the direction of the prey, and ambush the prey as quickly as possible.

The land chocobo whale is 12 feet, looks like a combination of a crocodile and an otter, has strong protruding teeth, a long mouth, a big head, strong muscles and limbs, has a terrifying tension force and a terrifying tearing force, 50 million years ago can dominate the bottom of the sea and land, is a real semi-aquatic mammal, it may be that modern whales have degenerated limbs, can no longer survive on land, otherwise it will be the natural enemy of many land animals, including humans, of course!

The ancestor of the whale was the meso-clawed beast. The ancestors of whales were originally terrestrial animals, and then gradually evolved into amphibians, and then into fully aquatic animals, an evolutionary process that began about 50 million years ago, and many branch species evolved from them.

Whales are not fish, but mammals, and the modern blue whale can reach up to 33 meters in length, making it the largest mammal and the largest animal ever living on Earth.

Since the clawed beast was a houngulate in the ancestor of whales, even though the appearance is very different, the hippopotamus is the closest to the whale among modern creatures.

According to the fossils that have been discovered, the first cetaceans to appear were Protocetaea, a transitional species that had evolved breathing holes but still had hind limbs and had strange shapes.

From an anatomical point of view, many of the characteristics of cetaceans show a high degree of adaptation to life in the ocean. However, the evidence in the shortcodes of the stool anatomy book is not sufficient to answer many questions about the origin of cetaceans. However, from a biochemical and genetic point of view, cetaceans are closely related to ungulates, and the fossil record (about 50 million years ago) also supports the evolution of cetaceans from ungulates.

The ancestor of cetaceans is most likely a terrestrial ungulate from North America, Europe and Asia, the mesoclawed beast family (Mesonychidae). The members of the mesoclaws range from petite dogs to bears, but many animals evolve from small to large, so it is possible that cetaceans evolved from small mesoclawes. It is speculated that these meso-clawed beasts, which are small in number and fish in shallow waters, gradually transformed into amphibious lifestyles and then into a variety of whales and dolphins over a long evolutionary process.

The ancestors of whales originally had legs.

Earlier scientists found the fossil of the "land whale" in the Eocene period, indicating that the land whale is distributed in the area of today's Pakistan, it is the ancestor of the whale, and the whale is a mammalian carnivore, it can eat both salt water and drink fresh water, it has no external ears, it tracks its prey by listening to sounds underwater, it often puts its head close to the ground to feel the vibration, to identify the direction of the prey, and ambush the prey as fast as possible.

The land chocobo whale is 12 feet, looks like a combination of a crocodile and an otter, has strong protruding teeth, a long mouth, a big head, strong muscles and limbs, has a terrifying tension force and a terrifying tearing force, 50 million years ago can dominate the bottom of the sea and land, is a real semi-aquatic mammal, it may be that modern whales have degenerated limbs, can no longer survive on land, otherwise it will be the natural enemy of many land animals, including humans, of course!

Although the land cocobo whale has long been extinct, the fact that whales are able to walk on land is indeed amazing for us in modern times!

In fact, the ancestors of whales also became whales from other animals.

It's a bit like a deer, it has 4 legs, it's scary.

Mark Euhorn, a paleontologist at the Alabama Museum of Natural History, explains, "The appearance of the whale tail piece may be the final step in the transition of whales from land to sea. To explore this mysterious process, Euhorn conducted an analytical study of the newly discovered paleofossils. These ancient fossils were found by amateur bone enthusiasts on the banks of rivers in Alabama and Mississippi, and are fossilized bones formed after the death of the ancient whale in Volote Georgia.

The Vololot Georgia whale lived about 40 million years ago and roamed the Gulf of Mexico in North America. This ancient whale is about a meter long and feeds mainly on fish with its sharp teeth. The earliest known whale with a tail is closely related to the genus Volote Georgia.

But Jurhorn found that when the Voloth Georgian whale was separated from other cetaceans just two million years later, it was clear that there were no tailings.

Whale couple. Ham Eun-Jeong, a member of the girl group T-ara, and Lee Jang-woo, an actor from the actress group, will become the new "imaginary couple" and appear together on the MBC show "We Are Married". The two had their first program recording on the 30th.

The two are called"Whale couple. "

Li Zhangyu: June 1, 1986 Gemini O-type height weight 184cm 68kg singer, model, actor.

Han Enjing: December 12, 1988 Sagittarius O-type Height Weight 168cm 46kg T-Ara member and actor.

Because it was "Jingyu couple" (the last word of the two people's names), the Chinese fan gave them the cute name "whale couple". In Korea, it is called a friendly couple (because the Korean pronunciation of the first character of their names is a homonym for friendship), and international rice is also called"woojung“、"cc"(Campus Couple).

The whale is a big, big animal.

1.The application of the derivative is to judge the slope of the curve, you must know this, so the second derivative is not to judge the slope of the first derivative, the first derivative is greater than zero means that the value of the function has been increasing.