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For a long time, the scientific community has believed that lobe-finned fishes, including coelacanths, were extinct from the earth as early as the early Cretaceous period. Humans can only understand this type of fish-shaped vertebrates through fossils in the strata. The leopard took a peek. I
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
When the ferns of the Paleozoic Era formed the first primeval forests on earth, gymnosperms, which were more advanced than ferns, had quietly appeared in the late Devonian period. But at that time, the climate on Earth was warm and humid, ferns developed more smoothly, and gymnosperms were no
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 "
In addition to corals, coelenterates also include polyps and jellyfish. Both coelenterates and sponges are diploblasts, but they are more advanced than sponges because they already have the division of labor between nerve cells and primitive muscle cells. Coelenterates al
Radiolarians and foraminifera are both protozoa, and they belong to the phylum Protozoa of Sarcopodia. In addition to Sarcopoda, protozoa include Flagellates, Ciliates, and Sporozoa. Protozoa are the lowest animals in the animal kingdom. Their bodies are only composed of a single cell. The i
Foraminifera are a type of tiny single-cell protozoa with pseudopods. Most of them have a hard shell made of minerals. There are many openings in the shell and many small holes in the shell wall. The body of a foraminifera is composed of a mass of cytoplasm, which is divided into two layers.
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
Chinese name: Troodon Latin name: Troodon Age of survival: Late Cretaceous Fossil origin: Canada, United States, China Physical characteristics: 2 to 3.5 meters long Diet: carnivore Type: Theropod Definition: gnawing teeth
Chinese name: OviraptorosaurusLatin name: OviraptorAge of survival: Late CretaceousFossil origin: MongoliaPhysical characteristics: 1.8~2.5 meters longDiet: carnivoreType: TheropodDefinition: egg thiefIn 1920, the Third Central Asia Expedition, led by the Museum of Natural History in New York, shock
Chinese name: TaiyulongLatin name: CaudipteryxAge of survival: Early CretaceousFossil origin: Liaoning, ChinaPhysical characteristics: 70 to 90 cm longDiet: carnivoreType: TheropodDefinition: A bird with a feathered tailThe discovery of the primitive Archeopteryx, which belongs to the suborder Ovira
Chinese name: Archeopteryx Latin name: Protarchaeopteryx Age of survival: Early Cretaceous Fossil origin: Liaoning, China Physical characteristics: 70~90 cm long Diet: carnivore Type: Theropod Definition: primitive Archaeop
Chinese name: Therizinosaurus Latin name: Therizinosaurus Age of survival: Late Cretaceous Fossil origin: Mongolia, Kazakhstan Physical characteristics: 8 to 11 meters long Food habits: Omnivorous Type: Theropod Definition:
Chinese name: Single-clawed dragon Latin name: Mononykus Age of survival: Late Cretaceous Fossil origin: Mongolia Physical characteristics: 1 meter long Diet: carnivore Type: Theropod Definition: One-clawed lizard
Chinese name: Chinese bird dragonLatin name: SinornithosaurusAge of survival: Early CretaceousFossil origin: Western Liaoning, ChinaPhysical characteristics: 1 meter long (sub-adult)Diet: CarnivorousType: TheropodDefinition: Bird-like dinosaur from ChinaIn September 1999, Chinese scholar Xu Xing rep