According to Science Views, no one knows for sure what caused the end of the Jurassic period, but they do know that several species started to die out, which gave rise to the Cretaceous period. Scientists do not believe that the transition from the Jurassic period to the Cretaceous period was as violent as the transition that took place at the start of the Jurassic period.Know More
Science Views says that the Jurassic period started after a large extinction at the end of the Triassic period. Scientists believe that the start of the Jurassic period was caused by the splitting of Pangaea, which was what the continents were called before they split up into different landmasses. The splitting of Pangaea caused massive earthquakes and volcanic eruptions, which gave way to a large extinction. No such global event took place during the transition between the Jurassic period and the Triassic period.
The end of the Jurassic period is marked by what scientists call “The Great Extinction.” Many theories exist as to how this extinction took place, but some evidence suggests that it was due to plant decay. The creatures that survived during this transition included bugs that fed on dead organisms and mammals that fed on insects.Learn more about Dinosaurs
The pterodactyl was a winged reptile of the Jurassic period that lived roughly 150 million years ago. As the term "dinosaur" generally refers to creatures walking upright on two or four feet, and the pterodactyl flew or waddled on its back legs, the animal is actually a pterosaur.Full Answer >
The velociraptor became extinct at the end of the Cretaceous Period due to an asteroid strike at the Yucatan Peninsula that occurred roughly 65 million years ago. This extinction event, known as the K-T boundary, also killed all other known species of non-avian dinosaurs.Full Answer >
The purported mass dinosaur die off known as the K-Pg extinction event took place during the end of the Cretaceous Period (K) during the Mesozoic Era some 65 million years ago. This scientific theory is based on the study of the fossil record, which shows evidence for the existence of dinosaurs during the Mesozoic Era but not during the proceeding Cenozoic Era. There is a clear line of demarcation, an actual line found in sedimentary rock layers known as the K-Pg Boundary, with the majority of the fossilized remains found below this line belonging to the "Age of Dinosaurs" not appearing in the space above the line, which marks the beginning of the Paleogene Period (Pg), the Cenozoic Era and the "Age of Mammals."Full Answer >
There are numerous theories regarding the extinction of the dinosaurs, including the triceratops, at the end of the Cretaceous period. The most prevalent theory describes the sudden destruction of the dinosaurs, and 50 to 75 percent of the planet's flora and other fauna, being due to a huge asteroid impact that dramatically altered the environment. However, despite strong evidence, there is no conclusive proof, explains the Smithsonian Institution.Full Answer >