Tibetan science popularization ｜ What do you eat for gardotic dinosaurs living in ancient times?

The last meal of the dinosaur is about 100 million years One day, a dinosaur wearing armor was dragging a bulky body in the forest for food. Unexpectedly, it became its last meal. Soon after eating, it died suddenly. The corpse was rushed into the sea and gradually drowned in the mud on the bottom of the sea. It was not until 2011 that scientists in the province of Alberta, Canada. Its fossils were found near the mine. After many years of research, scientists have discovered that there is a ball -sized material in the stomach of this dinosaur, which is the first stomach that has been discovered so far to retain such a good dinosaur fossil. It is currently displayed in Royal Byrity Museum in Royal Canada. What exactly does the herbal dinosaurs living in ancient times? In the past, although scientists, according to the shape of dinosaurs and chin, have various guessing what plants they eat and how these plants are digested, but the archeological scientists of the Royal Tyrrell Ancient Biology Museum recently were in \"\" The Royal Society Open Science magazine published an article, which provided conclusive evidence to reveal the daily daily dietary secret of herbivorous dinosaurs for the first time. This stomach is 5.5 meters long and 1.3 tons of herbivorous dinosaurs, which belongs to the type of Jialong. Its head is small, but the body is wide. There are hard skin like the turtle shell, with two spikes on the shoulders. Dinosaurs that are eating (picture source/Royal Canadian Tyrier Ancient Biology Museum) analysis and observation results of material components in the stomach show that most of the last meal of this armor is fern, 88%of which are leaves. , 7%are rhizomes and branches. Through a microscope, scientists have more unexpected gains -they can still see the perfect concentrated plant, and even the structure of the plant cells is clearly visible. This armor seems to be very picky. Most of the leaves in the stomach are the leaves of a ferns, and there are a small amount of green plants. In addition, there are black carbonized substances in its stomach, which is usually the residue after the burnt material. Scientists speculate that at the time, the fire may have just occurred. The research team has identified 48 ancient moss, 26 types of ferns, and 13 kinds of naked plants in its stomach, mainly coniferous trees and two blooming quilt plants. In addition to plants, scientists have also discovered many fine stones that seem to help grind food in the sand sac that looks like stomach stones or chicken sacs. This new discovery broke through our previous understanding of herbivorous dinosaur diet, so that we had the opportunity to understand the ecological environment of animals at that time -how dinosaurs adapt to the environment of the fire, and their digestion and physiological conditions. It is difficult to judge from the bones of dinosaurs. \"Knowledge is Power (Han Tibetan)\" brief introduction: This magazine aims to popularize scientific knowledge, spread scientific ideas and scientific methods, and promote the spirit of science, and to improve the Tibetan groupScientific quality services, especially to sow scientific seeds to the majority of Tibetan young people, inspire scientific wisdom and ignite the dream of scientific.

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