Can bracken kill dinosaurs?

The saddest news I have seen these days is probably that some scientists have found that there is a carcinogen "protofern glycoside" in bracken, which will induce esophageal cancer if used in large quantities for a long time. People have long known that "natural" and "traditional" foods can cause cancer, such as bacon and smoked sausages. Good taste comes at a price. There are also some smells that are both evil and "natural", such as moldy peanuts and aflatoxin in rice and wheat, which are all authentic "natural". Now bracken has joined this "natural poison" camp, which is really unacceptable. In spring, a plate of black bean fried bracken or cold bracken is a seasonal dish in the south. However, in the memory of childhood, bracken has always smelled of death. Every year on Qingming Festival, shepherd's purse in the south is out of season, and the long stalks are too old to eat. Bracken is just in time. Tomb-Sweeping Day's grave-sweeping activities include not only painting the ancestors' tombstones in red to offer sacrifices, but also flying kites and picking bracken. On the mountain with good feng shui, the number of graves gradually increased, and it gradually became a grave mountain with many graves. The "North Mangshan Mountain" mentioned by many poets is actually everywhere. In Tomb-Sweeping Day, people sweep graves on mountain trails. It rains a lot during the Qingming Festival, so it is rare to go to the grave to catch up with the good weather. Often one step at a time, muddy feet, extremely underdeveloped cerebellum, quite bitter. Fortunately, when you get to the mountain, you can worship your ancestors and eat fruit sacrifices, and you can start picking bracken. Next to our ancestral grave, there are some small graves, and bracken grows luxuriantly. When my grandmother was still alive, she always warned us not to step on other people's graves and to be careful when picking bracken. This is a junior high school student in a school. In the 1950s, in a movie, someone shouted "There is a spy", which triggered a stampede and killed more than 10 students on the spot. If they were alive today, they would have been grandparents. I remember one year I seemed to accidentally step on one of the graves, and I had a nightmare in the middle of the night when I got home. There were always some dark shadows around me. Now that I think about it, it's probably just a coincidence. They died young, and no descendants came to visit their graves. Gradually, the tomb began to collapse and was slowly covered with ferns. I stepped on it carelessly. My hometown is located at the junction of subtropical zone and temperate zone, and the mountains are covered with ferns. After the rain, ferns sprouted luxuriantly, as if holding up a curved miniature fist and roaring. Pick the most tender, knead it, blanch it with hot water at home, and then use it for cooking and cold salad. People who don't like it may think it has a funny sour taste, and the taste is still sticky and astringent, but people who love to eat it will like it very much and think it is a rare game. Don't eat bracken in spring, just as northerners don't eat Toona sinensis in spring Every time I eat bracken, I actually feel that some genes belonging to dinosaurs are ready to move. Looking back at Jurassic and Cretaceous, when dinosaurs walked through the ferns all over the sky, I'm afraid the bracken at that time was not a miniature fist, but a giant's iron fist, and the roar was definitely much stronger than the bracken we eat today. Will vegetarian dinosaurs eat a lot of bracken? Can eating too much bracken cause cancer? Will the toxins in bracken be absorbed by carnivorous dinosaurs that prey on vegetarian dinosaurs through the food chain? Oh, this is really a very interesting scientific topic.