Broadening the basis of information on the topic of the Cretaceous extinction, this book particularly highlights evidence that points away from the global catastrophic scenario, towards a fossil based theory suggesting that a multitude of factors resulted in the period's radical changes.

Broadening the basis of information on the topic of the Cretaceous extinction, this book particularly highlights evidence that points away from the global catastrophic scenario, towards a fossil based theory suggesting that a multitude of factors resulted in the period's radical changes.

In 1980 Nobel Laureate Luis Alvarez announced his theory of the dinosaurs final demise: a gigantic meteorite crashed into the earth and raised a cloud of dust that caused darkness for years, suppressing photosynthesis, which impeded plant growth, and eventually starved the dinosaurs. This idea exploded into common awareness with almost unprecedented speed, and was instantly embraced by the media and the public. Almost without question, it quickly became the hottest scientific "fact". Unfortunately for Alvarez, many in the scientific community did to support this theory, and in fact later research showed the impossibility of such an idea. The Great Dinosaur Extinction Controversy chronicles the fantastic story of how this hypothesis became so widespread, the way it became "common knowledge" - from the pages of Science to The New York Times to Parade Magazine, the controversy it caused, and the ample scientific research that proves the theory wrong. Officer and Page also present an attractive and carefully investigated alternative explanation for the mass extinctions that occurred at the end of the Cretaceous period. Through this account they show the ways that sound science should be performed and the findings transmitted.

Archaeologist Brandon Thackery and his rival Miles 'Klicks' Jordan fulfill a dinosaur lover's dream with history's first time-travel jaunt to the late Mesozoic. Hoping to solve the extinction mystery, they find Earth's gravity is only half its 21st century value and dinosaurs that behave very strangely. Could the slimey blue creatures from Mars have something to do with both? At the publisher's request, this title is being sold without Digital Rights Management software (DRM) applied.

This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.

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Award-winning author-illustrator Drew Sheneman brings budding paleontologists the truth about dinosaurs in this informative and hilarious nonfiction picture book that will teach kids everything they didn't know (and never thought to ask) about their favorite subject--Dinosaurs! A long, long time ago, planet Earth was full of dinosaurs. Giant dinosaurs that ate plants, meat-eating dinosaurs that walked on two feet, dinosaurs with armored frills--all KINDS of dinosaurs. Until an asteroid appeared in the sky. A big one. A hot one. A moving-very-fast one. When it hit, most of the plants and animals on Earth went extinct. It was the end of the dinosaurs . . . . . . Or was it? Actually, the latest research shows that the dinosaurs didn't all go extinct. They're still around us now. In fact, you've probably seen dinosaurs at the park, eaten dinosaurs for dinner, and maybe even cleaned dinosaur poop off your family's car. Who are these dinosaurs living all around us? Find out in this informative, hilarious, and 100 percent factual nonfiction picture book by award-winning author, illustrator, and beloved syndicated cartoonist Drew Sheneman.