An INCREDIBLE Journey to the Earth's Prehistoric Oceans | Earth History Documentary скачать в хорошем качестве

An INCREDIBLE Journey to the Earth's Prehistoric Oceans | Earth History Documentary

🌍 About 541 million years ago, the distribution of land and sea was much different than what we know. All of this took place long before the creation of Pangea. At this time of the Cambrian, during the first phase of the Paleozoic, the Iapetus Ocean separates North America from South America and Africa which was welded together, the whole called Gondwana. The Rheic Ocean separates the African coast from the Baltic continent. Other oceans, such as the Panthalassa and the Paleotethys cover a very large area that separates North China and Siberia. Over millions of years, the continents have moved apart, the oceans have expanded and opened on others. The land broke away and microcontinents were born. This is the case in the Devonian of Avalonia which includes Canada, England, Wales, France and Denmark. In the Carboniferous, North China shrank and became isolated from the other continents and microcontinents. During the Permian, new movements started to bring the lands closer together to form Pangea. In the Triassic, the Thetys Ocean is cut. It begins an opening that will lead to the Atlantic Ocean by dislocating the Pangea. Plate subductions, when one plate slides under another, and orogenies, these movements of plates that lead to the formation of mountains, continue to shape the planet and give it a new face over time. Ocean ridge activity keeps sea levels high. Shallow seas cover some continents. Other phenomena cause basalt flows. Continents break off, one by one. The land and water seem to be in perpetual motion. Each of these movements will lead the continents a little further adrift to form the world as we know it today. 🔥 As a reminder, the videos are published on SUNDAYS at 6:00 PM. ------------------------- 💥 Prehistoric Oceans: The Paleozoic Eon, and even more so the first period of the Paleozoic, the Cambrian, marks a real turning point for life on earth. Until then, unicellular organisms were the only ones to populate our planet. None of them has a particular cell that would allow for example to produce internal organs. They are soft-bodied protozoic beings. They feed via the cell membrane... which is their own body. The Cambrian marks an extraordinary and unprecedented change: the birth of multicellular organisms. In addition to the appearance of these new living beings, the Cambrian is also synonymous with the explosion of life, which proliferated during this period. In summary, what you should remember about the Cambrian era is that life is teeming and diversifying all over the world. Animals are still largely soft-bodied organisms, but their differentiated cells allow them to adapt to their environment and evolve. Specific internal and external organs appear: eyes, legs, antennae, mouth system, digestive system, nervous system. A food chain is also set up and thus favors the development of life in the ocean. ------------------------- 🎬 On the program today: 00:00 - Introduction 00:22 - The birth of the world ocean 11:17 - Ocean evolution and continental drift 13:34 - Paleozoic Aeon, the age of fish, the air of change 15:13 - I. The Cambrian 21:57 - Arthropods : Trilobites 23:23 - Yohoia 24:57 - Canadaspis 25:25 - Archaeocyathas 26:47 - Anomalocaris 27:55 - II. Ordovician 31:47 - Bivalves 32:30 - Family Gastropodas 33:26 - Orthoceras 34:45 - Agnatha 39:11 - III. The Silurian 39:58 - Anapsids 40:33 - Osteostracans 42:00 - Acanthodians 42:56 - Eurypteridae 44:24 - Placoderms 45:25 - IV. The Devonian 46:43 - Stromatopores 47:15 - Bothriolepis 47:57 - Placoderms: Dunkleosteus 48:34 - Cladoselache 50:41 - V. Carboniferous 52:20 - Crinoids 53:03 - Helicoprion bessonovi 53:30 - Stethacanthus 54:20 - VI. Permian 55:39 - Chondrichthyes 56:34 - Actinopterygians 57:20 - Amphibian 01:01:38 - Mesozoic Era 01:02:30 - VII. Triassic 01:04:46 - Ichthyosaurs 01:05:23 - Nothosaurus 01:06:16 - Ceresiosaurus 01:06:50 - Pachypleurosaurs 01:07:35 - VIII. Jurassic 01:09:03 - Hildoceras 01:09:53 - Stenopterygius 01:10:40 - Plesiosaurs 01:12:54 - IX. Cretaceous 01:14:03 - Hydrotherosaurus 01:15:03 - Mosasaurs