What are the ancient marine life? I believe everyone is familiar with the ocean. It is rumored that the ocean is the cradle of culture and the origin of life. There are millions of marine life in the world, and even more. So how much do we know about ancient marine life? Let's take a look at what ancient marine life has.
What are the ancient marine life? 1, ammonite.
Nautilus is a creature in the late Cretaceous. Only the earliest part of the shell remained coiled, and the later growing part became a straight rod. The lifestyle of this straight nautilus is still inconclusive: some paleontologists believe that they live vertically in water, and their tentacles look for food on the seabed; Others think they live by the sea.
2. Banana fish
This ancient marine creature has a flat chin and a discoid jawbone, which can crush their favorite prey-clams and mollusks.
3. Hexagon fish
This is a prehistoric mysterious deep-sea animal. Fossils show that they were found in European and African waters during the Cretaceous period.
4, spear-toothed fish
In the ocean 60 million years ago, the huge ammonite, which was very common in the dinosaur era, disappeared. Many mollusks such as clams and sea urchins have taken their place. 1.5-meter-long silver sharks and other sharks are also common. Before and after the extinction of dinosaurs, a new round of fish evolution produced modern bony fish. Salmon and salmon are the survivors of that era. The fragrant fish didn't survive. They are about 17.5 cm long. They are salmon-like fish with huge teeth biting like traps.
5. Long-headed dragon
Long-headed dragon is named after its long head. The longest long-headed faucet bone found so far is 2.7 meters long. This is bigger than the skull of Tyrannosaurus Rex. Long-headed dragon has a long and sharp nose and mouth full of sharp teeth. Such a head must be a nightmare for fish and squid. It can be seen that the long-headed dragon was the overlord in the sea at that time. The long-headed sauropods can reach10m in length and10t in weight. It has four big fins, a strong chin, a huge head and a short, pointed tail.
About 98 million years ago, long-headed dragons lived in the waters near Oceania. When swimming in the water, the long-headed dragon pushes its body forward by swinging its tail left and right, and uses its limbs to control its direction and maintain its balance.
Long-headed dragon is a huge marine reptile, which does not belong to dinosaurs in classification, but it also appears in the general information about dinosaurs because it lived with dinosaurs in Mesozoic. Their specimens are collected in Carnegie Museum.
Sauropods should reproduce in a similar way to turtles-digging a nest in the sand on the shore to lay eggs.
6. magic dragon
Magic dragon is a bit like a crocodile, with a flat tail and four short legs. They also have a big mouth, full of fangs like nails. The agile magic dragon can catch many kinds of animals, such as ammonites, cephalopods, fish and small reptiles.
Although magic dragon is naturally an aquatic animal, they still like to come to the land to bask in the sun, just like turtles and crocodiles today. In the breeding season, female magic dragon will drag her heavy body to the beach to lay eggs like a turtle.
Magic dragon is very similar to a long-necked dragon. However, compared with the long-necked dragon, magic dragon's body is small and slender, and he can't fully adapt to life in the water. Moreover, magic dragon's limbs were not fin-shaped like plesiosaurs, but had toes and webbed feet. Therefore, we can draw a conclusion that magic dragon can stay on land for a long time, which is beneficial to their mating and production activities.
7. Horn shark
Horn shark is the second largest shark in Cretaceous, belonging to killer whales. Like modern tiger sharks, horned sharks have triangular flat teeth and slender serrated crowns. In the front row, the teeth are upright, but gradually increase the backward inclination. This kind of shark lives in shallow water.
8.prehistoric squid
The prehistoric squid is a prehistoric mysterious deep-sea animal. Scientists have found prehistoric squid fossils near Australia, Germany and inland sea routes in the west. The inland sea route in the west is also called the Cretaceous sea route. This vast ocean once divided North America in two.
9.plesiosaur
Plesiosaur is a marine reptile (including marine crocodiles and ichthyosaurs). They evolved from land creatures and later returned to live in the ocean. These medium-sized reptiles lived from Triassic to late Cretaceous. They must live in clean waters and mainly feed on fish. Fossils confirm that they often appear in the marine environment, eating not only nautilus but also fish.
10, Taiwan Province ichthyosaur
In appearance, the Taimen ichthyosaur is very similar to the modern dolphin. Its shape is suitable for swimming and its speed is very fast. Their body length is generally more than 6 meters, and there are a pair of big round eyes on both sides of their heads. The diameter of the eyes can reach up to 30 cm, while the diameter of the blue whale with the largest eyes in modern vertebrates is only 15 cm. Taiman ichthyosaur can prey on squid, fish and other prey at night or in the dark deep sea, mainly living in Europe in the early Jurassic.
What are the ancient marine life? What are the strangest marine life in the world?
1, flower cap jellyfish
In the ocean, when it comes to strange creatures, the cap jellyfish can't be ignored. It is a very small jellyfish with a diameter of only 15 cm, which is completely tiny compared with the largest jellyfish in the world. It is this little guy who has a strange ability: he can adjust his size according to the amount of food supply! It's amazing. Maybe only a seemingly soft creature like jellyfish has this strange ability.
In addition, jellyfish mainly eat small fish, but occasionally eat the same kind. This situation is too strange to think with human thinking. It is understood that this small jellyfish lives near the coast of Japan. It looks like a head wearing a space helmet, surrounded by garlands. Despite its strange behavior, this flower-capped jellyfish is still very cute.
2. Marine butterflies
Ocean butterflies, which many people literally understand as a butterfly in the sea, is actually a conch, but it has wings-like feet and often swims with these beautiful "wings". Its behavior looks strange.
3. Pacific barrel-eyed fish