This thin layer contains high levels of iridium<\/strong>, a rare metal to be found on Earth, but highly present in asteroids.<\/p>\n\n\n One interesting fact is that the layer of iridium is present throughout the world, but in the Yucat\u00e1n Peninsula<\/a> the rare metal was found in a much higher quantity. <\/p>\n\n\n\n In the early ’90s, researchers discovered the asteroid crater in the Gulf of Mexico<\/strong><\/a>,<\/strong> confirming the K-Pg event.<\/p>\n\n\n\n The dinosaur\u2019s evolutionary path is still a topic that raises disagreements among the scientific community. <\/p>\n\n\n\n Several discussions have been raised due to differences in sampling and not standardized analytical methodologies. <\/p>\n\n\n\n To fully understand and reconstruct the diverse patterns of that period is extremely difficult and subjective as researchers tend to have a hierarchical bias. <\/p>\n\n\n\n In addition, in an attempt to correct these divergent factors, different methods are applied, leading scientists to different conclusions.<\/p>\n\n\n\n So, the main discussion among <\/sup>scientists is, if dinosaur\u2019s species were in decline even before the K-Pg event, or if the species diversification and evolution was still going on when the asteroid hit Earth.<\/p>\n\n\n\n In an article published in the Royal Society Open Science, Bonsor and colleagues from the Universi<\/a>ty of Bath and the Natural History Museum tried to reach an answer for that debate. <\/p>\n\n\n\n Using dinosaurs\u2019 evolutionary trees and specialized statistical modeling. The study took into account the tendency of growth and evolution of new species that were ascending at that time.<\/p>\n\n\n\n The evolutionary path of the dinosaur\u2019s species was marked by many ups and downs. <\/p>\n\n\n\n When a new ruler species emerged, they lived for a while until a newer and stronger species came around, causing the decline and extinction of the previous one.<\/p>\n\n\n\n \u201cPrevious studies done by others have used various methods to draw the conclusion that dinosaurs would have died out anyway, as they were in decline towards the end of the Cretaceous period. <\/p>\n\n\n\n However, we show that if you expand the dataset to include more recent dinosaur family trees and a broader set of dinosaur types, the results don\u2019t actually all point to this conclusion \u2013 in fact only about half of them do\u201d, said Joe Bonsor, the lead author of the study in a statement.<\/p>\n\n\n\n Bonsor and his research group do not support the theory that the dinosaurs were in decline by the time of K-Pg. The last dinosaurs\u2019 species who were rising have not been considered into the data of previous studies. <\/p>\n\n\n\n They claim that if the asteroid hadn\u2019t crushed into the Yucat\u00e1n Peninsula, the dinosaurs would have continued to rise and evolve, continuously ruling the planet Earth. <\/p>\n\n\n\n However, Bonsor recognizes that \u201cThe largely unavoidable biases in the fossil record and lack of data can often show a decline in species\u201d, but at the same time, he says, science cannot fully understand the reality of that time. <\/p>\n\n\n\n \u201cWe may never know the true rates of evolution of the dinosaurs, since the only way to know for sure is to fill in the gaps in the record to get the best answer, and we simply don\u2019t think we\u2019re there just yet,\u201d says Bonsor.<\/p>\n\n\n\n If it was not for the K-Pg extinction event, the reptile era maybe would never have ended, and the mammals would never have evolved or conquered new niches on land area, leading to the world as we know today. <\/p>\n\n\n\n If the dinosaurs for some reason had survived, and we live together it would be like one of the main characters of the movie Jurassic World the Fallen Kingdom, said: \u201c\u2026 the first time you see a dinosaur, it\u2019s like a miracle, you read about them in books, you see the bones in museums, but you don\u2019t really believe it. <\/p>\n\n\n\n They are like myths. And then you see, that first one alive\u201d. <\/p>\n\n\n\n Fortunately, \u2013 contrarily to what happens in the movie \u2013 we cannot see one dinosaur alive, and it will remain a mystery for us and for scientists what really happened. <\/p>\n\n\n\n For now, fossil studies are the only way we have to better understand the dinosaur\u2019s reality. <\/p>\n\n\n\n Yes everyone, Mind the Graph has dinosaur illustrations for you to use. You can use them to show your research in a visual and attractive way. <\/p>\n\n\n\n With Mind the Graph you can create illustrations, infographics templates, and graphical abstracts using our illustrations gallery available, from earth sciences<\/a> to geography<\/a>.<\/p>\n\n\n\n But, if you need a very specific illustration we\u2019ll design it for you! If you can\u2019t find the perfect resources for communicating your science, you can count on our on demand service. All made specifically for you by professional designers and curated by our science team.<\/p>\n\n\n\n![\"\"](\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/02\/dinosaur-1024x918.png\")
<\/a><\/figure><\/div>\n\n\n