It's the world's oldest animals, most of them are ugly and creepy to watch, but we don't usually come into contact with these "ancestral" level animals
1 frilled shark
One of the most primitive sharks, known as "living fossils". There are differences in time, one says 380 million years, one says 80 million years, in short, it is one of the oldest creatures.
Perennial inhabit the deep sea, the distribution range is wide throughout the world, but very scattered, the current reproductive productivity is very low, the population is very small, is listed in the Red List of endangered species.
2 three-eyed dinosaur shrimp
Scientific name: Jiapeng horseshoe, commonly known in China as Wang Ba lid, horseshoe pipe. It is said to have first appeared in the Paleozoic Carboniferous period 300 million years ago
After three Earth century extinctions, several strains are still alive and widely distributed around the world, with the Chinese division being the most widespread.
3 coelacanth
Coelacanth. Coelacanths first appeared 377 million years ago, when they were extremely abundant on Earth. Coelacanth fossils were found from the late Permian period (295 million years ago) to the early Cretaceous period (144 million years ago). Coelacanth, like other fish of its kind, is less ossified and exhibits a general tendency to move away from early freshwater environments and towards an oceanic lifestyle. Coelacanth has long been thought to have been extinct about 60 million years ago, but in 1938 a living species, speartail, was caught in a net near the shores of southern Africa. Under the bounty call, the second tail was caught in the Comoros Islands in 1952. Later, several other tails were caught in this area. Later, it was found that this type of fish has long been familiar to the islanders, and its meat can be eaten after salting and drying, and the coarse scales are used as abrasive.
4 sturgeon
Sturgeon, the largest freshwater fish, cartilaginous hard scales, sturgeon. What people usually call sturgeon refers to the fish of the order Sturgeon. It is one of the most primitive taxa of fish, China is the world's largest sturgeon species, the most widely distributed, the most abundant resources of the country, and it is said that this fish tastes very delicious, can live 2 million years to now is really not easy ah.
5 Goblin Sharks
Goblin shark generally refers to Euclidean barramundi, also known as Euclidean swordfish shark, Euclidean barramundi shark, Gabrin shark, infested in the deep sea where the sun can not shine, generally at a depth of more than 200 meters. It is the only member of the family Falconidae. This shark will appear black in the water, making them almost invisible in the deep sea to avoid being preyed upon, the long fish kiss has a sensor, in the sea can not see or hear the prey can be found, the powerful jaws are used to quickly prey prey. The sharks are ugly and fierce, but fortunately they are generally out of reach by humans, and they like to live in the depths of the Pacific Ocean, just as they did 118 million years ago.
6 "Martian" ants
The "Martian ant" is the last common ancestor of all ants found so far, an underground forager
On September 16, 2008, according to the British "Times" report, American biologists found a new ant in the Amazon rainforest in Brazil, and initially determined that this may be the offspring of the oldest ant. Because the ant has many unseen features, biologists call it "ants from Mars."
7 Lamprey eels
Lampetra japonicum , also known as the eight-eyed eel and the seven-star eel , is an ancient animal of the order Origami and lamprey , and an intermediate point in the evolution of invertebrates into fish , and is the most primitive of the fish-like species. It is 360 million years old and is characterized by a cylindrical mouth, no upper and lower palate, and sharp teeth inside the mouth.
8 horseshoe crabs
Horseshoe crabs are not real crabs, but primitive arthropods. They have a large, disc-shaped body with a slender needle-like tail. Their ancestors date back to the Cambrian period, but it was not until the Jurassic period that they developed the shape of a horseshoe. Although five species of horseshoe crabs still exist today, they have been less common since the Cretaceous period.
Horseshoe crabs look both like shrimp and crabs, known as "horseshoe crabs", and are a class of animals as old as trilobites (now only fossils). The ancestors of the horseshoe crab appeared in the Devonian period of the Paleozoic Era in geological history, when the dinosaurs had not yet risen, primitive fish had just appeared, and with the passage of time, the animals of its contemporaries either evolved or became extinct, and only the horseshoe crab has retained its primitive and ancient appearance since its advent more than 400 million years ago, so the horseshoe crab has "living fossils" and has lived for 445 million years.
9 porous animals
Porous animals are mainly a class of monomer or group animals that live in the ocean, and are the most primitive type of offspring, dating back 760 million years. They can even be traced back to the first non-microbes on Earth. Has an important classification status. Morphological structures exhibit many primitive characteristics, but also have special structures. The body is made up of many cells, but the cells maintain relative independence from each other and have not yet formed tissues or organs. The body is composed of two layers of cells, the body wall around a central cavity, the central cavity with the outlet to communicate with the outside world. There are also many small holes or pipes in the body wall and communicate with the outside or central cavity. So it is also called sponge animal.
10 jellyfish
Jellyfish appeared earlier than the dinosaurs, dating back to 650 million years ago, is an important plankton in the aquatic environment, the main component of the jellyfish body is water, and is composed of two germ layers inside and outside, there is a very thick mesosteric layer between the two layers, not only transparent, but also has a floating effect. When they move, they use the reflection of water spray in the body to move forward, looking at it from a distance, like a round umbrella floating rapidly in the water; some jellyfish umbrellas also have various color patterns, and in the blue ocean, these swimming jellyfish of different colors look very beautiful. However, under the beautiful appearance, there is often a hidden killing machine, the jellyfish is covered with thorn cells on the top of the tentacles, like poisonous wires, it can shoot venom, and after the prey is stinged, it will quickly paralyze and die, so do not easily contact.
Most of these ancient animals can live so long in the deep sea, because there are the most feared "animal" humans on land.