HappyKidsToysWoodenRailway's video: Build and Play Brio Thomas and Friends Toy Dinosaur Island T Rex platasoures Smart Tech Train

Thank you 😊. For subscribe 💃, support 👌, like 👍. And shared. 😂🎂 our videos.. Some Of Our Popular Wooden Train Videos For Children Thomas Train Videos Track Changes Building Toys Vehicles for Kids ASRM, No Voice, Kids Lego Duplo https://youtu.be/tuqAi4D9YEY How To Build Make Wooden Train Videos For Kids Viaduct Construction, ASMR No Voice Wooden Brio kids https://youtu.be/m0tWJA57YkQ BRIO World, Smart Tech Engine, Action Tunnels, Train Video Wooden Track Changes Toys For children https://youtu.be/ZsuXjXbG6e0 Glow Train Metro Subway Train Tunnel Brio Thomas Train Videos For Kids Railway Trains Aquarium Train https://youtu.be/GwEPWueOSro Dinosaurs are a varied group of animals from taxonomic, morphological and ecological standpoints. Birds, at over 10,000 living species, are the most diverse group of vertebrates besides perciform fish. Using fossil evidence, paleontologists have identified over 900 distinct genera and more than 1,000 different species of non-avian dinosaurs. Dinosaurs are represented on every continent by both extant species (birds) and fossil remains. Through the first half of the 20th century, before birds were recognized to be dinosaurs, most of the scientific community believed dinosaurs to have been sluggish and cold-blooded. Most research conducted since the 1970s, however, has indicated that all dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction. Some were herbivorous, others carnivorous. Evidence suggests that all dinosaurs were egg-laying; and that nest-building was a trait shared by many dinosaurs, both avian and non-avian. Using one of the above definitions, dinosaurs can be generally described as archosaurs with hind limbs held erect beneath the body.[8] Other prehistoric animals, including pterosaurs, mosasaurs, ichthyosaurs, plesiosaurs, and Dimetrodon, while often popularly conceived of as dinosaurs, are not taxonomically classified as dinosaurs.[9] Pterosaurs are distantly related to dinosaurs, being members of the clade Ornithodira. The other groups mentioned are, like dinosaurs and pterosaurs, members of Sauropsida (the reptile and bird clade), except Dimetrodon (which is a synapsid). None of them had the erect hind limb posture characteristic of true dinosaurs.[10] Dinosaurs were the dominant terrestrial vertebrates of the Mesozoic Era, especially the Jurassic and Cretaceous periods. Other groups of animals were restricted in size and niches; mammals, for example, rarely exceeded the size of a domestic cat, and were generally rodent-sized carnivores of small prey.[11] They have always been recognized as an extremely varied group of animals; over 900 non-avian dinosaur genera have been identified with certainty as of 2018, and the total number of genera preserved in the fossil record has been estimated at around 1850, nearly 75% of which remain to be discovered, and 1124 species by 2016.[12][13][14] A 1995 study predicted that about 3,400 dinosaur genera ever existed, including many that would not have been preserved in the fossil record.[15] B Theropods - The name Theropod means ‘beast foot’ and this group includes all of the carnivorous (meat eating) dinosaurs. Although it might be surprising, birds actually evolved from Theropods rather than from Ornithischian (bird hipped) dinosaurs. Theropods moved on two legs and include a number of scary looking but popular dinosaurs such as Tyrannosaurus rex and Velociraptor. ‘Tyrannosaurus’ comes from the Greek words meaning ‘tyrant lizard’, while the word ‘rex’ means ‘king’ in Latin. Tyrannosaurus rex is often abbreviated to T-Rex. Tyrannosaurus rex lived in an area of the Earth that now makes up western North America. Tyrannosaurus rex walked on two legs, balancing its huge head with a long and heavy tail that sometimes contained over 40 vertebrae. Tyrannosaurus rex measured up to 13m (42ft) in length, 4m (13ft) at the hip and could weigh up to 7 tons! The skull of a Tyrannosaurus rex alone measured up to 1.5m (5ft) long. The largest tooth of any carnivorous dinosaur found to this date is that of a T-Rex. It is estimated to have been around 30cm (12in) long when including the root. When Tyrannosaurus rex hit around the age of 14 its body size would increase rapidly, putting on around 600kg (1300lb) a year over the next 4 years. Tyrannosaurus rex had small arms that were extremely powerful and featured two clawed fingers. Tyrannosaurus rex lived in the late Cretaceous Period, around 66 million years ago. Because of the lack of concrete evidence, it is difficult for scientists to work out how fast Tyrannosaurus rex could run, with estimates ranging from as low as 17kph (11mph) to as high as 70kph (43mph). Average estimates suggest a max speed of around 40kph (25mph).