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First of all,'Before the dinosaurs'The geological age is very long, and different animals dominate in different periods.
The era of dinosaur dominance is called the Mesozoic, preceded by the Paleozoic, before the Proterozoic, and before the Archean (both are collectively referred to as the Cryptozoic).
Multicellular eumetazoans originated from the Ediacaran period (roughly equivalent to the Aurora period, 100 million years ago) at the end of the Proterozoic ('Precambrian explosion'). The dominant biota in the Ediacaran biota is the anomalocaris, a very strange creature that was the apex predator of the time.
From the Cambrian to the Ordovician (100 million years ago) in the Paleozoic era, various invertebrates were active in the ocean, so I will not introduce them one by one. By the Silurian period (100 million years ago), higher plants began to appear on land, and in the Devonian period (100 million years ago) the two most successful terrestrial animals were the two most successful groups.
Amphibians among insects and vertebrates appeared (animals landed!). )。Carboniferous (100 million years
100 million years ago) early winged insects appeared, and by the end reptiles appeared.
In the Permian, the last epoch of the Paleozoic Era, large reptiles finally came to the stage of history. The early Permian reptiles first evolved to larger sizes, such as Edaphosaurus (but this one eats grass) and Dimetrodon, which can grow up to meters long and carnivorous! )。
One of the most distinctive features of the coiled dragons is the dorsal sail on their backs, which is believed to be related to the heat dissipation of the body.
Later, therapsida (evolved from a certain ancestor of the order Lystrosaurs, and the ancestors of mammals are a type of this type of animal, and our ancestors were also wider) replaced the dominant position of the order Therapsida, and the Lystrosaurs are representatives of this type of animal.
The water dragons survived the Permian-Triassic mass extinction event and managed to continue to dominate the first 1 million years of the Mesozoic Era. By the middle Triassic, thecodontia, the ancestors of dinosaurs, pterosaurs, and crocodiles, emerged to replace the water dragon (e.g., erythrosuchus, which was about 5 meters long and meters tall, was the largest predator in the early and middle Triassic).
Dinosaurs emerged in the middle Triassic, survived the late Triassic extinction event, and survived until the Jurassic to become the dominant fauna on land.
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Who was the overlord of the earth before the extinction of the dinosaurs Inventory of 4 terrifying prehistoric creatures.
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The largest dinosaur on Earth was the fragile dinosaur.
The largest individual of the fragile double-chambered dragon could be 60-80 meters long, with a hip height of 10 meters, a head height of 14-15 meters, and a maximum weight of 220 tons. As a result, the Fragile Dicorosaurus was the largest dinosaur in terms of size and the largest animal ever created.
The fragile double-chambered dragon was excavated by Oramel Lucas in 1877. Lucas discovered this part of the spine (neural arches and neural spines) in a garden park north of Canon City in Colorado, USA, close to the mine where the dome was found.
The habits of dinosaurs
Herbivorous dinosaurs were limited by their height in the plants they could eat, so some small herbivorous dinosaurs would stand on their hind legs in order to eat the leaves of plants at high heights. Carnivorous dinosaurs fed on herbivorous dinosaurs and other animals. The different foraging patterns of various dinosaurs are also reflected in their teeth.
Sharp teeth and claws were preyed upon by carnivorous dinosaurs. Tyrannosaurus dinosaurs often went it alone because they sought out lone herbivorous dinosaurs. Some dinosaurs would move in groups, locking on to their prey and swarming and slicing open the prey's abdomen with the second finger of their claws.
Herbivorous dinosaurs generally had some special "equipment" to deal with the attacks of carnivorous dinosaurs, which sometimes consisted of tough leather armor, bone clubs, or bone spikes, and sometimes powerful tails. Such as mallet dragon and so on. Large herbivorous dinosaurs would act in groups, and when threatened, they would collectively hold their ground and fight back.
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Creatures that predate dinosaurs are jellyfish, horseshoe crabs, coelacanths, lungfish, nautilus, etc.
1. Jellyfish: It has existed on the earth 650 million years ago, a little earlier than the dinosaurs.
2. Horseshoe crab: It first appeared in the Devonian period, when dinosaurs did not appear, and primitive fish just appeared, which are called living fossils.
3. Coelacanth: It is the ancestor of terrestrial vertebrates, and the fossils of coelacanth found now are at the end of the Permian, probably 100 million years ago.
4. Barramundia: It is one of the oldest animals on Earth, appearing 500 million years ago. Not only do they breathe with gills like normal fish, but they also have lungs that do not die when exposed to dry conditions.
5. Nautilus: It is a creature that appeared 500 million years ago, and is a close relative of modern octopus and squid.
Dinosaurs: Refers to the most recent common ancestor of Triceratops, modern birds, and Diplodocus and all their descendants. To facilitate research, dinosaurs can be divided into avian and non-avian dinosaurs.
Among them, non-avian dinosaurs lived only in the Mesozoic era (Triassic, Jurassic and Cretaceous) and were all extinct 65 million years ago.
Before the advent of dinosaurs, lizard-type species had appeared on the earth, and although they were not as large as dinosaurs, they had a certain advantage over other animals at that time. Paleontologists believe they were the prototypes of the dinosaurs that came later. Lizards appeared in several geological epochs before the Triassic – the Carboniferous period (100 million to 100 million years ago). >>>More
Claws are one of the main predators of carnivorous dinosaurs**, and it is generally believed that the largest and most ferocious dinosaurs must have the fastest and sharpest claws. >>>More
The world's kung fu out of Shaolin. For foreign boxing, it is Shaolin boxing, because Shaolin boxing is the most widely spread, the greatest influence, the propaganda work is also the best, enjoys a high reputation in the world, Shaolin boxing and Shaolin internal strength one finger Zen kung fu is the most powerful, just imagine that only one index finger can erect a person's body, then at least one index finger has more than 100 catties of power, a fist will have hundreds of catties of power, so divine power, the boxing king is also difficult to resist, is not invincible in the world? For the inner boxing, it is Taijiquan, which is also called Taiji, that is also called Taiji, and now the inner boxing has to be related to Taijiquan, so Taijiquan is the most king. >>>More
Ultraman Noah.
Born at the same time as the parallel universe, the first light, any parallel universe regards it as a god. This was the original setting. >>>More
Before the age of dinosaurs, who was the overlord on earth? After reading the long insight!