Overview

The Dinosaurs are the most successful and the largest terrestrial reptiles in the Mesozoic Era more than 200 million years ago, they dominated the terrestrial ecosystem of the Earth for more than 160 million years and suddenly disappeared 65 million years ago, it remains a great mystery in the history of life evolution on the Earth. The mystery of the extinction of the Dinosaurs has been the focus of the research and debate in the science community since the discovery of the Dinosaur fossils. The scientists put forward various speculative theories on the Dinosaurs extinction on the basis of the Dinosaur fossils, totaling more than 130 in number, in an attempt to identify how and why the Dinosaurs became extinct, but all of them are controversial, about 90 of these theories have scientific basis more or less. All these theories are hypotheses rather than conclusive. The Book collects 50 speculative theories on the extinction of the Dinosaurs and introduces the most authoritative and popular theory on this issue by so far, and put forward the most possible and reasonable causes of the Dinosaurs extinction on the basis of the existing theories in this respect. The Contents of the Book: I. Introduction II. Speculative Theories on Dinosaurs Extinction III. Most Authoritative and Popular Speculative Theory on Dinosaurs Extinction IV. Most Possible and Reasonable Cause of Dinosaurs Extinction V. Conclusion and Revelation

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