Ouba coastal scorpion is an ancient animal in CAMBRIAN. Living in the ocean about 530 million years ago, it is likely to be located in what is now Canada. They have five eyes with C, and scientists speculate that the Ouba coastal scorpion may be a distant relative of shrimp. [ 1]
gingkgo
Ouba Binhai scorpion
Binomial nomenclature/system
Liriomyza regalis
boundary
animal kingdom
door
Podopod
1 basic data editing
Ouba coastal scorpion is an ancient animal in CAMBRIAN. There was a species explosion on the CAMBRIAN earth.
The emergence of many new species is the earliest period with rich animal fossil records in the history of the earth. The Ouba coastal scorpion is so strange that scientists speculate that it may be a distant relative of shrimp, and it may have nothing to do with any modern creature. [2]
They look like weird animals in science fiction movies, with a linked structure and an unmineralized exoskeleton. They are 40 to 70 mm long in total, and they use 14 pairs of paddle gills to swim. The strangest thing is their heads. The Ouba coastal scorpion has five eyes, a handle on its head and a nose. There is a long soft mouth in front of these eyes and a claw at the top of the mouth.
2 scientific classification editing
The strange shape of Ouba coastal scorpion has caused many attempts to classify it in the past 100 years. For example, Walcott, the original descriptor of this creature, once thought it was a crustacean.
3 Biometric editing
This creature has a link structure and a non-mineralized exoskeleton. The total length of the car body is 4 1 to 70 mm. Its head has five protruding eyes supported by eye stalks, and its visual range is likely to reach 360. Under the head, there is a kiss like a sock. The end of a long kiss is a grappling thorn, which is generally considered to be used to catch prey.
It has gills different from all living things today, and there are many appendages like flags. The exotic shrimp, on the other hand, is considered as a kind of creature with similar structure (also extinct). Its last three flag appendages together form a tail. Unlike all known arthropods with the same segmented joints, its head does not seem to be clearly separated from the body segments.
4 Growth Region Editor
Obabin sea scorpion fossils on display at the Smithsonian Museum in Washington, D.C.
Ouba coastal scorpion lived in the ocean about 530 million years ago, located in Canada. Ouba coastal scorpion is generally considered to live in shallow sea bottom, but theoretically, this creature should be a hunter with swimming ability. Its nose and mouth are thought to be used to catch insects in underwater caves, and may also be used to roll up sediments on the seabed in search of food. If these conjectures are correct, it is likely that the Ouba coastal scorpion has a snout that can be folded back to send food to its mouth under its head.
Half-angle chestnut
Horseshoe crabs that lived about 420 million years ago are similar in appearance to paddle crabs. Its body is divided into chest and abdomen. Its head consists of six joints and its abdomen has six pairs of appendages. The last pair is plate-shaped and used for swimming.
Morphological characteristics of 1
A rare extinct arthropod, platyptera, rarely preserved as a fossil. Horseshoe crab appeared in the Early Ordovician (488 million years ago).
Horseshoe crab (9)
By the end of Permian (about 25 1 100 million years ago). They are usually called giant scorpions, but most horseshoe crabs are small animals. Jaekelopterus Rhenaniae (also known as Pterygotus rhenanius or P. buffaloenis), a species from Silurian strata in North America (about 444 million years ago to 4 4. 16 billion years ago), is the largest known arthropod, with a body length of nearly 3 meters (m). The horseshoe crab's body consists of many joints, with appendages in the front, which are used as swimming organs for paddling.
2 lifestyle editor
Some are agile carnivores and may be able to swim quickly to catch prey; Other planktonic horseshoe crabs are probably benthos and feed on carrion. ?
Living in brackish water environment, it usually appears in specialized and often less species of animal combinations.
Stems chrysanthemum stone
Baculites is an extinct mollusk. Their shells were almost straight and spread all over the world in the late Cretaceous. They were named by the French paleontologist Alcide d'Orbigny in 1850.
Chrysanthemum stones can be as long as 2 meters, and they are believed to be upright with their heads down. Because there is no balance at the other end of the shell, scholars believe that this is the only available form of ammonite. However, recent studies have found that some kinds of ammonites may live in a relatively horizontal direction.
In the initial stage, the ammonite shell grows spirally, with a diameter of about 65438±0cm. When they mature, the shells will straighten. Adult stem ammonites can reach 7 cm to 2 m long. From the isotopic analysis of shells, it is considered that ammonites live in the middle of the water column, not near the seabed or sea surface.
In some strata, ammonites are very common, and it is estimated that they live in large groups. However, their density is not as good as that of right-angled stones. The length of male ammonites is only one-third to one-half of that of females, and the ribs on the shell are also very shallow. Their shells also have a living room like their ammonites, and gas is hidden in the living room to maintain buoyancy. Between these living rooms, there is a thin tube connecting each room and the head. The animals themselves are in the last and largest living room, which can control the air and snorkeling in each living room. The partition wall of the compartment is connected with the shell, and the joint is provided with suture lines. Different kinds of ammonites have different suture lines. The ammonite fossil is very brittle, and it is usually broken when it is found. Generally, it is broken into two or more sections, and the fracture is often located in the suture line.
2? obscure
Stems and Cretaceous ammonites are often confused with orthoclase. Both of them are long pipes, which are equally common in the stone market. These two branches evolved into tubes in different periods. The age of right angle stone is much longer than that of stem chrysanthemum stone. However, the suture of right angle stone is simple, while that of rod chrysanthemum stone is more complicated. The lifestyle of this straight nautilus is still inconclusive: some quaint biologists believe that they live vertically in the water, and their tentacles look for food on the seabed; Others think they live by the sea.
Denkrustus
Dunkleosteus, an archaeologist who lived in Devonian (about 360 million to 4.1500 million years ago), was about 8 to 10 meters long and weighed 4 tons. It is considered as the largest marine predator of this era, and its main food is fish and invertebrates protected by hard shells. The dungeon fish, which lived in Devonian 400 million years ago, is the largest member of the known shield fish family. Its existence predates the birth of the first dinosaur on land by 654.38+75 million years. Dungeon fish is one of the oldest jaw vertebrates on earth, and its head has a fingernail-like inclusion.
Basic information
Chinese name Dungeon Fish
Tenebrionidae
Binomial method
animal kingdom
It belongs to Dunaliella.
chordata
Vertebrate subfamily
Fish class
Distribution of fossils: Morocco, Africa, Poland, Belgium and the United States.
arthropod
Survival Age: Late Silurian-Late Devonian
Dunkleosteus terrelli, a paleontologist who lived in Devonian (about 360 million to 4.1500 million years ago), is considered as the largest marine predator of that era and the second largest known bite force (Megalodon), with a body length of about 8 to 10 meters and an average weight of 4 tons.
Dungeon fish is a representative member of LEPIDOPTERA family and the largest member of known shield fish family. It is a giant carnivorous thick-skinned fish that lived in Devonian about 360 million years ago to 4 4. 15 billion years ago, and has amazing biting power. It is the absolute overlord of Silurian and Devonian oceans. Among the known creatures existing on the earth, it has great bite force and amazing suction. It was at the top of the marine food chain. It can bite a shark in half and prey on any creature in the Devonian ocean. It may be the first "king of beasts" on earth. Its existence predates the birth of the first dinosaur on land by 654.38+75 million years. However, the huge body and size greatly affected the speed and sensitivity of the dungeon, which gradually lost to carnivorous fish such as small sharks in the evolution process; Coupled with the changes in the earth's environment, it finally gradually left the stage of biological reproduction and evolution.
2? Appearance characteristics
The appearance of the dungeon gives people an unusually fierce feeling. The strong spindle-shaped body like a shark is closer to the shape of modern fish. The head and neck are covered with a thick and hard exoskeleton. Although it is a carnivorous fish, it has no teeth. Instead of teeth, it is the extra head nail of the kiss, as sharp as a hay cutter. You can cut and crush anything. Pigment cells show that the back of the dungeon is black and the abdomen is silver. It is about 10 meter long and weighs about 4 tons.
Its body is streamlined, a bit like a shark. The dungeon fish lacks real teeth, but it is replaced by two long serrated blades, which can crush anything. Pigment cells indicate that the back of the dungeon is black and the abdomen is silver. This fish is not picky about food. It eats fish, sharks and even its own kind. This seems to be the result of indigestion in the dungeon: its fossils are often with vomited and semi-digested fish.
3? Living habits
Dungeon fish lived in shallow water and had an unusually strong appetite. It was the strongest carnivore at that time. Ancient sharks, cephalopods (nautilus, ammonites) and even their relatives are all in its recipe. The dungeon fish with such a large appetite has been indigestion. Around the fossils found, some vomited and semi-digested fish remains can often be found. At the same time, we can also find some indigestible food residues from the stomach of dungeon fish, such as the headgear of other shield fish and the calcium carbonate shell of mollusks.
4? relevant information
Devonian, which lived more than 300 million years ago, was a planet where fish ruled everything. During this period, the earliest sharks appeared, but their situation was very worrying, because at that time, they were very happy to be lucky enough to save their lives. Among many monsters, the most frightening animal is a giant fish that looks like a bulldozer-dungeon fish. Its strange-looking dungeon fish head has an extremely hard "armor" that can crush prey in an instant. The dungeon fish looks like a fierce beast: a powerful body and a head wrapped around the deck. Its body is streamlined, a bit like a shark. The dungeon fish lacks real teeth, but it is replaced by two long serrated blades, which can crush anything. Pigment cells indicate that the back of the dungeon is black and the abdomen is silver. This fish is not picky about food. It eats fish, sharks and even its own kind! This monster nearly 10 meters long is simply the incarnation of the devil!
Unfortunately, due to natural disasters and competition from other fish, their once glory has long since disappeared today. At the end of Devonian, all the last members of the dungeon family became extinct. At present, scientists can't find any descendants related to dungeons in the ocean. And the bones found by dungeon fish have become fossils hundreds of millions of years ago. At present, scientists can't reproduce this giant carnivorous fish by extracting DNA from its bones and cloning it. However, scientists firmly believe that with the continuous efforts of human beings and the continuous development of science and technology, more fossil samples of this species will be discovered and collected one day, and complete DNA will be extracted and collected one after another, and this ocean overlord who has disappeared for 360 million years will be brought back to this world through cloning.
Back whale
Longwangjing, meaning imperial lizard, is a genus of Longwangjing family, which lived in the late Eocene from 39 million to 34 million years ago. The fossil of Wang Long whale was first discovered in Louisiana, USA. At first, it was mistaken for a huge marine reptile. Paleontologists have identified at least two other species from fossils found in Egypt and Pakistan.
gingkgo
Back whale
Latin scientific name
Back whale
boundary
animal kingdom
door
chordata
summary
mammal
eye
cetacean
suborder
Archaeoptera
The branch of academic or vocational research.
Longwangke
belong to
Dragon king whale, dragon king whale
Distribution area
Egypt, USA
Other Chinese names (Chinese [Other])
Mechanical toothed whale
Period (period)
Late Eocene 45-36 million years ago.
Natural enemies (predators)
unknown
Diet (diet)
Edible meat
Typical length
15 ~ 20m
Fossil period
Late Eocene
Protect the status quo
Extinction (fossil)
Scientific classification
grow
* cetacean bones
* B. Drazinde
:: B. Islamic State of Iraq and Sharm
When the Longwang whale first discovered the mechanical toothed whale fossil, he thought it was left by a sea monster.
2 Introduction (Introduction) Editing
The first mechanical toothed whale fossil was found in Louisiana, USA, but it was soon found in Fayoum sediments in Egypt, and many other species were preserved. This early cetacean found a large number of fossils. It must be common in the warm shallow sea between Africa, Europe and North America. One of the fossils and its last meal was a group of sharks. Their bones also remind people of the ancestors of land animals: a pair of small feet.
Survival age
In the desert of Egypt, there is a strange place where whale bones are eroded from sand. "Whale Valley" is the fossil remains of a shoal where whales swam near the shore 36 million years ago. The mechanical toothed whale is one of the two whales found here. The skeleton of the Megalodon whale shows that it does have a long body. In fact, when it was first discovered, it was mistaken for some kind of sea snake (which is why it has an English name, meaning "lizard king"). Although Egyptian fossils are not always well preserved, a group of fish fossils were recently found in the chest of a mechanical toothed whale. Is this like its stomach?
Longwangjing (5 photos)
The contents, including several different fish bones and a 50-cm-long shark, are enough to prove that Wang Long whale is not a tame animal.
The warm coastal waters in the late Eocene are very similar to the modern tropical ocean, except for one important difference: it was the home of huge early whales and mechanical toothed whales. The mechanical toothed whale was the first giant whale. Their huge size means that they need a lot of food to maintain their bodies. It is speculated that most mechanical toothed whales swim in shallow water all day, looking for potential prey. Mechanical toothed whales are not very picky predators. Fish, sharks, squid, turtles and other marine mammals are all its food. Mechanical toothed whales can use their keen vision and hearing to find and catch prey. Like modern whales, mechanical toothed whales breathe air. They can't stay underwater for long. The mechanical toothed whale's nostrils are not born on the top of its head, so when it floats, it must lift its nose off the water.
Back whale
Longwangjing (meaning "emperor lizard") is a genus of Longwangjing family, which lived in the late Eocene 39 million to 34 million years ago. The fossil of Wang Long whale was first discovered in Louisiana, USA. At first, it was mistaken for a huge marine reptile. Paleontologists have identified at least two other species from fossils found in Egypt and Pakistan.
The average length of Wang Long whale is 18 meters (60 feet), which is slimmer than modern whales. Paleontologists are very interested in their degenerated short hind legs. The dragon king whale is also a state fossil of Mississippi and Alabama.
The discovery of the dragon king whale
In Louisiana and Alabama in the early19th century, the fossils of Wang Long whales were quite common, so they were often used as raw materials for furniture. Later, an connoisseur sent the spine of a Wang Long whale to the American Philosophical Association because he was worried that these fossils would be destroyed by local people. This fossil finally found the hands of anatomist Dr. Richard Harlan, who announced that it was a reptile fossil and named it Longwang whale, which means "emperor lizard". When richard owen, a British anatomist, studied the spine, jaw fragments, forelimbs and later discovered rib fossils, he announced that it was a mammal. Owen suggested renaming it Zeuglodon cetoides, and now it has become synonymous with Wang Long whale. Although this name is considered more appropriate by many people, it is customary to use the first published name.
1845, Albert Koch learned that huge bones were found in Alabama, and these bones were later pieced together into a complete skeleton.
Back whale
This story. He later pieced together a "big" with a length of 1 14 feet.
Various pictures of Wang Long whale (2 1)
Sea snake skeleton, and let it be exhibited in new york and Europe. This so-called "sea snake" skeleton was finally found to be composed of the bones of five different individuals, some of whom were not Longwang whales. These bones were eventually destroyed by the Chicago fire in 187 1 year.
From the fossils found in Zeuglodon Valley, Egypt, another kind of Wang Long whale was found, called Longwang whale. These fossils are well preserved, including hind limbs, and there are many of them. Phillip Gingerich, a paleontologist, organized many excavations in this valley and concluded that the Egyptian belief in Indian crocodiles may be due to these huge fossils buried here. Another species, the dragon king whale, was found in Pakistan. A whale named Basiloterus husseini is the closest whale known to Wang Long whale, but its body is not as big and slender as Wang Long whale.
Characteristics of Wang lung whale
The most striking feature of Wang Long whales is that they are very slender. Because they have an unprecedented slender spine, they are described as the most slender whales. Compared with other marine mammals, the dragon king whale is considered to have an unusual way of movement. The chest, waist, sacrum and coccyx are the same size, which means that Wang Long whale moves like an eel. What's more strange is that paleontologist Philip gingerich thinks that the Longwang whale may move horizontally like an eel in some cases, and there are still some unclear places about marine mammals. The bones of the tail show that the dragon king whale probably has a small tail fin, but it may only be helpful for vertical movement. Most reconstructed images show that arowana whale has a small dorsal fin, presumably similar to fin whale, while other reconstructed images show that arowana whale has only one dorsal bulge.
Dragon King Whale in Scientists' Imagination
The most famous of the dragon king whale's body structure is probably the 0.6-meter-long hind leg, which undoubtedly can't help it move. This degenerate hind leg may only be used to fix two Wang Long whales in different positions. The hind legs are similar to the degenerated hind legs used by snakes to guide mating, so the same may be true of Wang Long whales.
The spine of Wang Long whale is hollow and seems to be filled with liquid. This shows that the dragon king whale can basically only
Skeleton fossils of Wang lung whale
It moves horizontally on the ocean surface, while most other marine mammals can move in three dimensions. Judging from the thin axial muscle tissue and thick limb bones, Wang Long whale is considered to be unable to swim and dive for a long time. Longwang whales are also considered to have no ability to move on land.
The head of Wang Long whale has no melon similar to that of modern toothed whale, and its brain is relatively small. Wang Long whale is not considered to have the social ability of modern whales, and the above characteristics may have led to this result.
The dragon king whale was once thought to have some soft shells, but it seems to be the result of the wrong sea turtle shell. Some mysterious zoologists believe that the dragon king whale or its more evolved kind is still alive. They are sea snakes that have been witnessed. But the fossils of Longwang whales show that they died out 37 million years ago, and there is no evidence to support this statement.
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