Are all dinosaurs huge? Incorrect. The earliest dinosaur discovery was more than 150 years ago, and it focused on sensational things: the big bones and skulls that we know from the atrium of the museum. But dinosaurs come in various shapes and sizes. In fact, some of the most exciting discoveries in recent years are small. In 2016, a tail was found in a piece of amber. It is a sparrow-sized creature and may be dancing in the palm of your hand.
Are dinosaurs scaly and reptiles? Incorrect. New evidence has greatly changed the way people see and perceive dinosaurs. Although some dinosaurs do have the scaly skin of reptiles, many do not and are more like birds. Fossils showing primitive feathers were first unearthed in China in the mid-1990s. It is now generally accepted that many dinosaurs have fur or feathers. The Yutyrannus shown in the picture is the largest feathered dinosaur ever discovered.
Are all dinosaurs gray-green? Incorrect. Fossil dinosaur feathers can reveal interesting details about the colors of dinosaurs-which was once considered impossible. In some fossils, tiny structures called melanosomes that once contained pigments have been preserved. By comparing the melanosomes with the melanosomes of living birds, scientists can judge the possible original colors of feathers. Taking the Chinese dragon bird as an example, the dark area of the fossil in the picture is rusty brown or ginger, and the rest is considered white.
Have we found all the dinosaur species? Incorrect. Scientists have clearly identified about 900 dinosaur species-although there are more paleontologists who do not have enough bones, or fossils are not preserved enough to truly call them unique species. There are many, many species-one estimate suggests that there are 50,000 to 500,000 species, but we may never find their fossil remains. The reason why so many species can exist is that they are highly specialized, which means that different types of dinosaurs have different food sources.Can live in the same habitat without competition. For example, with unusually large eyes and triggering hearing, Shuuvia Deserti, a small dinosaur in the desert, evolved to hunt at night.
Can we tell the sex of the dinosaur? Incorrect. The SUE Tyrannosaurus Rex on display at the Chicago Field Museum is the most complete Tyrannosaurus Rex fossil in the world, but we don’t know whether it is a male or a female. Although there are many early claims, including female Tyrannosaurus being larger than males, these findings are now considered inconclusive. SUE is named after Sue Hendrickson, who discovered this dinosaur on a commercial excavation trip north of Faith, South Dakota in 1990.
Are dinosaurs and humans very different? Yes or no. Dinosaurs suffer from some diseases that affect humans and animals today, including cancer, gout, and infections. Tyrannosaurus is the ultimate predator of dinosaurs, but it has become the victim of the smallest enemy: the parasite. SUE the T. rex's jaw is covered with smooth-edged holes-the result of a parasitic infection called trichomoniasis. It can also affect the jaws of modern birds such as pigeons, pigeons and chickens.
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