Anyone with even a smattering of at least about dinosaurs (that almost no one except the insiders) or, more simply, I've seen Jurassic Park , can boast that claim to know the birds are the direct descendants of dinosaurs. In fact, it is exactly this: henceforth, when you talk about the extinction of the dinosaurs, you can exclaim with astonishment false: "The dinosaurs are extinct? And when it happened? "Since almost all evolutionary biologists and paleontologists agree that birds are of real dinosaurs, the only ones who have never learned to fly, and the only survivors of the Cretaceous extinction. The birds are part of the clade of Maniraptora ("Thieves with your hands"), which includes, among others, the Dromeosauridi as the Velociraptor, Oviraptor, and the like Oviraptoridi Therizinosauridi like ... well, like Therizinosaurus. All creatures vary in size from small to big one, bipedal, carnivorous or omnivorous, and more often covered with feathers. It seems odd that a chicken is a dinosaur? Be ', surely the Velociraptor, a small, light and feathered biped from the pointed snout and large eyes, looks more like a chicken than a Brachiosaurus, 25 feet of scaly giant quadruped with elephant legs, long neck and round head and bumpy - and yet, it's hard not to consider Velociraptor dinosaur, so why exclude birds? Monophyletic in the classification, each group must have a common ancestor and all descendants, so it is inevitable to classify birds as dinosaurs. The Maniraptora were (are whoops. ..) theropod, a group that includes all the carnivorous dinosaurs, which means that your canary is actually closely related to the killing machine of 13 to 6 meters, weighing 6 tons, with a trap instead of the mouth and half a meter long topped sixty teeth serrated knife of 20 cm, capable of breaking the bone in one fell swoop reinforced with a large hadrosaur known as Tyrannosaurus Rex.
Fico.
The oldest dinosaur is already considered a bird Archaeopteryx litographica, perhaps the symbol of evolution, beautiful form of step with teeth, tail, and clawed hands, but reptilian snout pointed, arms stretched above and bird feathers. The most beautiful fossil of Archaeopteryx, which is known (and one of my favorite fossils) immortalized the creature in stratified rock quarries Solhnofen, Germany, in a pose incredible, almost by Christ on the cross, with arms outstretched and head thrown back, like a huge middle finger to lift the biology and science to religion: this is the true messiah, that's the truth.
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