Free Downloads Dinosaurs: How They Lived And Evolved
Dinosaurs are one of the most spectacular groups of animals that have ever existed. Many were fantastic, bizarre creatures that still capture our imagination: the super-predator Tyrannosaurus, the plate-backed Stegosaurus, and the long-necked, long-tailed Diplodocus. Dinosaurs: The Ultimate Guide to How They Lived taps into our enduring interest in dinosaurs, shedding new light on different dinosaur groups. Leading paleontology experts Darren Naish and Paul Barrett trace the evolution, anatomy, biology, ecology, behavior, and lifestyle of a variety of dinosaurs. They also remind us that dinosaurs are far from extinct: they present evidence supporting the evolution of dinosaurs to birds that exist today as approximately ten thousand different species. Throughout their narrative Naish and Barrett reveal state-of-the-art new findings shaping our understanding of dinosaurs. Readers will discover, for example, how the use of CT-scanning enables scientists to look inside dinosaur skulls, thus gaining new insight into their brains and sense organs. Dinosaurs is a must-have for all those wanting to keep up to date about these dynamic, complicated creatures.
Hardcover: 224 pages
Publisher: Smithsonian Books (October 11, 2016)
Language: English
ISBN-10: 1588345823
ISBN-13: 978-1588345820
Product Dimensions: 7.9 x 0.9 x 10.2 inches
Shipping Weight: 2.1 pounds (View shipping rates and policies)
Average Customer Review: 4.5 out of 5 stars See all reviews (15 customer reviews)
Best Sellers Rank: #234,567 in Books (See Top 100 in Books) #35 in Books > Science & Math > Biological Sciences > Animals > Dinosaurs #51 in Books > Science & Math > Biological Sciences > Animals > Fossils #385 in Books > History > Historical Study & Educational Resources > Archaeology
Dinosaurs are one of the most interesting group of creatures that appeared in Triassic period around 230 million years ago. They dominated the planet during the Jurassic (201 to 145 million years ago) and Cretaceous periods (145 to 66 million years ago). These creatures occupied every landmass during this vast period and evolved into thousands of species. During the last decade at least one new species has been identified and named every year, greatly improving our knowledge about these species. Even the existing theories that explain the demise of these ferocious creatures have been questioned based on recent geological and archeological studies, and alternative ideas are on the table. A brief discussion about demise of dinosaurs is found in chapter 6, entitled “The great extinction and beyond.”In this book, the authors trace the history, origins, and family-tree using anatomy, biology, ecology and behavior of dinosaurs. Many creatures of this period are not completely extinct but exist in the form of certain reptilian species like alligators, crocodiles, turtles and tortoises. Many of these creatures grew smaller due to the environmental and survival challenges posed by the geological splitting of the continents from one supercontinent. When dinosaurs first appeared 230 million years ago there was one supercontinent called Pangaea, which stretched from north to south and surrounded by one gigantic ocean. About 150 million years ago, the continents started to split. At around 90 million years ago, South America, India and Australasia were separated from Antarctica. These geological movements brought forth new shorelines and impacted the climate.
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