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The earliest representative of lungfish is the bifin fish of the middle Devonian period. On this basis, lungfishes were relatively prosperous from the Late Devonian to the Carboniferous, and only a few extremely specialized representatives live in the equatorial regions of Africa, Australia,
We already know that based on the development of the temporal part of the skull, that is, the relationship between the development and changes of the temporal foramen, scientists divide reptiles (classes) into four subclasses, namely Anosus, Monossus, and Platysus. and Dicypodia. On this basi
Reptiles are the earliest amniotes to appear on earth. They evolved from labyrinths among amphibians. The transition from amphibians to reptiles occurred in the Carboniferous Period, and the transition must have been marked by the production of amniotic eggs. In addition to the most important
Actin-finned fishes are the most successful aquatic group of all vertebrates, occupying almost all ecological niches in waters on Earth. There are many kinds of them, varying in size, and their adaptability is like "Eight Immortals crossing the sea, each showing his magical powers"; their evo
The sharks we are familiar with are cartilaginous fishes. Nearly all cartilaginous fishes are marine animals. Throughout their life history (the entire process of a living organism from beginning to end), their skeletons are always cartilaginous, with the hard parts usual
Across the world, scientists have discovered a large number of tiny fossils from various marine strata from the Cambrian to the Triassic. Their shapes are very similar to various teeth, but they cannot be compared with any known animals. The teeth are so connected that scientists are still un
Bryos and mosses in plants are two different things! They are a type of primitive aquatic group animals with tiny individuals. However, their body structure is more evolved than that of worms, with three germ layers and a true body cavity, and their bodies are not segmented. They are called "
There are a group of beautiful islands in the mainland of the motherland and south of Hainan Island, scattered like jade beads in the South China Sea. Their names have been called Dongsha Islands, Xisha Islands, Zhongsha Islands and Nansha Islands by the Chinese for thousands of years. Island
Sponges are the simplest structure and the most primitive form among multicellular animals. They have appeared before the Cambrian and have continued to thrive until modern times. Sponges evolved from single-celled animals. Their cells have differentiated but have not yet formed tissues and o
Radiolarians are single-celled protozoa floating in the ocean. They are named after their radially arranged thread-like pseudopods. Protozoa are the lowest type of animals, and each individual is composed of only one cell. In terms of classification, scientists classify t
At the beginning of the 20th century, the German scientist Wegener proposed the theory of continental drift based on the outlines of the continents on the earth as well as stratigraphic and paleontological data. He believed that during the long period from the end of the Carboniferous to the
Among the many dinosaurs discovered so far, Eoraptor is the most primitive one. In 1993, Eoraptor was discovered in the Ischiguarasto Basin, an extremely barren and barren land in northwestern Argentina, South America, which belongs to the Triassic strata. The discovery o
Just when the clamor that birds originated from dinosaurs is overwhelming, my country's famous paleontologist and researcher Hou Lianhai of the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, has always insisted on the view that birds originated from a
The idea that birds are descendants of dinosaurs was first proposed by Hussein, a staunch defender of evolution known as "Darwin's hound" more than 100 years ago.Hussein was born in England in 1825. Due to his poor family background, he only received two years of formal education betwe
In the Jurassic dinosaur world, there was a giant dinosaur. They eat plants and live in vast wilderness. These are the dinosaurs of the genus Elopod. They evolved and developed through long-term adaptation from the Triassic Paleopod dinosaurs and the primitive sauropod di
About 208 million years ago, a mysterious worldwide disaster caused the extinction of many living things. This disaster heralded the end of the Triassic Period and the beginning of the Jurassic Period. Dashanpu dinosaur excavation site What caused thi
About 208 million years ago, a global catastrophe wiped out many species of animals. This marks the end of the Triassic Period and the beginning of the Jurassic Period. What caused this catastrophe? Scientists have proposed several explanations. Maybe, because a huge aste
Less than 15 million years after the earliest dinosaurs - those small carnivores - appeared, plant-eating vegetarian dinosaurs began to appear 215 million years ago. Among the fern forests and evergreen trees beside the river and lake. At that time, it was still in the late Triassic period ge