What creatures were there before the dinosaurs? 50

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).

In that time appeared what is believed to be the world's first reptile :

West Lothian lizard. By the Permian period, a geological epoch before the dinosaurs, reptiles were becoming more diverse and closer in shape to those of the earliest dinosaurs. The Permian was a relatively arid era, and deserts were common.

During the same era, lizards living in groups like the Ichirasaurus and Heterodontosaurus were active in desert oases. During the Late Permian, there were two distinct trends in the evolution of life, both of which had profound implications for the history of the Earth. One of these trends is called dinosaurs, and the other is called mammals.

The dinosaurs ruled the earth before (successively).

Precambrian prokaryotes protozoa lower plants.

Cambrian trilobites Odd shrimp Lower plants.

Ordovician trilobites, sea scorpions, lower plants.

Silurian trilobites Early fish ferns.

Devonian Trilobites, Shield fishes, Amphibians, Insects, Ferns.

Carboniferous, trilobites, shield fishes, lower reptiles, ferns.

Permian trilobites resemble mammals, reptiles, ferns.

Early Triassic Primosaurus gymnosperms.

Fish, amphibians, reptiles, protozoa, arthropods.

Reptiles, amphibians, mammals, plants, invertebrate (insect) bacteria,

Lower reptiles.

Prokaryotes are protozoa and lower plants.

A large number of reptiles and very few amphibians, fish and a small number of mammalian ancestors (a bit like mice) and a large number of tropical plants, invertebrates.

Microorganisms, marine life, amphibians, reptiles, dinosaurs. Plant.

Fish, various plants, reptiles.

The origin of life is cyanobacteria.

God, God, Jade Emperor (The answers are colorful!) )

What kind of creatures were there before dinosaurs? Star Awareness Project

Have you found all the information?!

Well, the simplest explanation is bugs, fish, and amphibians.

During the Jurassic period, dinosaurs were the most abundant among reptiles and dominated on land. Dinosaurs are the largest terrestrial animals in the history of the earth and can be divided into saurosaurs and ornithosaurs. Dragons can be further divided into vegetarian sauropods and carnivorous theropods.

Reptiles live in the sea with ichthyosaurs and plesiosaurs, and pterodactyls fly through the air. The Lufeng Basin in Yunnan, China, is rich in the fauna of the Early Jurassic Lufengsaurus. In the fluvial-lacustrine sedimentary sediments of the Middle Jurassic Lower Shaximiao Formation in the Zigong area of the Sichuan Basin, hundreds of fossil individuals such as dinosaurs, plesiosaurs, and pterosaurs were excavated in the sand body with an area of 2,800 square meters, which were relatively well preserved.

The Shangshaximiao Formation in the Sichuan Basin produces the mamenxisaur fauna. Terrestrial invertebrates include freshwater bivalves, gastropods, leaf-limbed and mesomorphs, as well as insects. Marine invertebrates include ammonites, arrows, foraminifera, radiolaria, bivalves, hexapoda, gastropods and brachiopods.

Gymnosperms reached their peak in the Jurassic, with cycads, ginkgo biloba and pine and cypress occupying an important position, and only remnants of seed ferns are represented. True ferns are still thriving, and only a small number of grass types remain from the Paleozoic era of stone pine and horsetail.

The creatures you're talking about evolved later.

Dinosaurs are mainly found in the Jurassic period of the Mesozoic era. Before the Mesozoic era there were:

Proterozoic: The marine life is mainly cyanobacteria, red algae and green algae, and protozoa probably appeared during this period. By 600 million years ago, there were zooplankton, cup sponges, and coelenterates.

Paleozoic: The fauna is most abundant in marine invertebrates, trilobites, molluscs and echinoderms. In the Ordovician, Silurian period, Devonian and Carboniferous periods, lower fishes, paleoamphibians and paleoreptiles appeared one after another.

Fish reached their full bloom in the Devonian. Carboniferous and Permian insects and amphibians flourished. In the early Paleozoic, marine algae were the main species of ancient plants, and by the end of the Silurian period, primitive plants began to land on land.

The Devonian was dominated by gymnoferns. During the Carboniferous and Permian periods, ferns flourished, forming dense forests.

Invertebrate; Trilobite; And so on and so forth.

Tigers, lions, and monkeys are mammals, which appeared after the extinction of the dinosaurs. In addition to reptiles such as crocodiles, there were also scorpions, spiders, centipedes, archaeopteryx, and Chinese dragon birds. As for the plants, there are ferns, ginkgo trees, pines and cypresses, etc. You look at giving points.

Of course not... There are dinosaurs, and they haven't all been eaten early?

The creatures of the same era as the dinosaurs were basically small, such as amphibians, insects (of course, not these common insects now, they have all evolved), Archaeopteryx, and many single-celled organisms in the ocean.

Many, much more. Please adopt, thank you

In the world of dinosaurs, there are also "world's best" that dominate different fields. They are ahead of other dinosaurs in terms of height, size, appetite, call, and even tail, so they are given the title of "most". Let's take a look at these champions and see them in style.

The earliest dinosaurs, much like the offspring of rabbit crocodiles, seem to have logically connected the intermediate link between dinosaurs and rabbit crocodiles.

From small to large. Archaeological scientists believe that the earliest dinosaurs were small carnivores that only came to Earth in the late Triassic period. At first, the number of "development" was not too large, but after tens of millions of years, in the world of "self-respect", the dinosaurs that continued to evolve continued to grow and develop, "wide hearts and fat bodies". By the Cretaceous period, they had reached their extreme, and their size became their main hallmark.

Southern Cross Dragon. Austraciluciferus was one of the early dinosaurs. This carnivorous dinosaur was 2 meters long, small in size, but very ferocious, and liked to hunt animals much larger than itself in groups, becoming the "first dinosaur hunter to prey on large animals". It is light in weight, has slender and powerful legs, runs fast, and has a strong jaw.

Black Ray Lar. Black Relasaurus was a bipedal carnivorous dinosaur excavated from Argentina, with a body length of about 3 meters and pointed teeth protruding from the front of the upper jaw, which could effortlessly tear off the flesh of its prey.

Early herbivorous dinosaurs.

Early herbivorous dinosaurs, such as Pisanosaurus and Beaktoothosaurus, were about 1 meter long, with fangs and shaped like pigs, and were generally preded by carnivorous dinosaurs.

In the early dinosaur world, there were many carnivorous dinosaurs and their size was not too large, but after millions of years, the herbivorous dinosaurs grew larger and larger, even exceeding the carnivorous dinosaurs several times, or more than ten times, thus becoming the rulers of the earth on a par with the carnivorous dinosaurs.

Southern Cross Dragon.

Ornithosaurus was the first dinosaur fossil to be discovered. It was discovered in 1822 by the Mantels of England. Before this, some people in Europe have also discovered, but they do not know where they belong and have always been mistaken for the remains of giants. The first dinosaur to be named was the avianthosaurus.

What kind of creatures were there before dinosaurs?

What kind of creatures were there before dinosaurs? Star Awareness Project

The current earth is our human world, and the earth 65 million years ago was also full of vitality - the dinosaur world, 65 million years is simply an instant for the 4.6 billion years of the formation of the earth, is it possible that the earth only appears in this moment? Maybe 65 million years ago, no, 100 million years ago, 200 million years ago, 300 million years ago, ......There have been many instances of higher beings; Many of the mysteries on Earth today are most likely prehistoric cultures.

Single-celled organisms were originally anaerobic organisms.

Before the advent of dinosaurs, what creatures lived on Earth?

There are many types of dinosaurs and they come in a variety of appearances. The dinosaurs we are familiar with are either tall and mighty, or strangely shaped.

I don't think you know what the early dinosaurs looked like. In fact, the dinosaurs at that time were not as diverse and diverse as they appeared later. At that time, they were not clearly differentiated, they were all about the same in appearance, and they were very "ugly".

Early dinosaurs refer to the Triassic dinosaurs, which had just evolved from the genus Alodontosaurs. Due to the age of dinosaurs and the emergence of dinosaurs, the number and variety are very limited, so there are not many bones left.

Early dinosaur fossils have been found in Europe, Africa, and North and South America, and although there are fewer fossils, it is still possible to obtain more or less what they looked like at the time from their remains.

The most representative early dinosaur is the Archaeraptor, a carnivorous dinosaur found in the Andes Mountains of northwestern Argentina, 220 million years ago (Late Triassic). It is 1 meter long, its skull is 12 centimeters long, and it is estimated to weigh about 11 kilograms when it was alive. It has stout hind limbs and short forelimbs and walks on two legs.

Archaeopterax had strong claws and sharp teeth, and the shape of the claws was like eagle claws, much like a robber, so the "Archaeraptor" got its name.

Another well-preserved fossil of an early carnivorous dinosaur was also recovered in the Andes. From fossils, it is known that it lived about 230 million years ago. Standing 1 8 metres tall and estimated to weigh about 110 kg alive, it has large foreclaws and a distinctive, hunt-friendly jaw and serrated teeth, and can walk or run upright on its hind limbs.

The Arizona Fossil Forest Park in the United States also unearthed a fairly complete fossil of an early dinosaur many years ago. It is 2 5 meters long, less than 1 meter tall at the hips, and weighed about 90 kilograms when it was alive. Walking on all fours and able to stand on hind legs, it has a long neck and tail, and is a plant-eating dinosaur, and it is estimated that it may be the ancestor type of the later sauropods with unusually large bodies.

Lived 2 200 million years ago.

From these excavated fossils, we know how the body of the dinosaur changed from small to large, and how the species changed from single to diverse.

It is also important to note that early dinosaurs had developed an improved walking posture, i.e., a prostrate walking posture. They can stand, walk, or run on their hind legs.

At that time, no other reptile could do this except dinosaurs. It can be said that this is a very important step in the history of animal evolution.

The early dinosaurs basically had thick hind limbs and short forelimbs, and they could walk or run on two legs, while the first dinosaurs ate plants.

I think the early dinosaurs should have been very tall, about two meters, and they could run fast, have sharp teeth, and walk on two legs, and they should have used the claws of their forefeet to hunt in their daily hunting.

The early dinosaurs were very large, with very sharp teeth, very long tails, and two legs, in short, they looked very scary.

What kind of creatures were there before dinosaurs? Star Awareness Project

What kind of creatures were there before dinosaurs?

Dinosaurs were first developed from the alveolars of the Late Triassic.

After a mass extinction 100 million years ago, the dinosaurs dominated the land by paleo reptiles.