T. Rex: Hunter or Scavenger? Tapa blanda - 2003

Dr. Thomas R. Holtz, Jr., is recognized as one of the world's leading dinosaur phylogeneticists (specialist in reconstructing dinosaur family trees), and experts on tyrannosaurs. In addition to his many scientific papers, he has been involved as a consultant and on-air talent for documentaries in the US, UK, Canada, and Japan, including the award-winning Walking with Dinosaurs and When Dinosaurs Roamed America for the BBC and the Discovery Channel. He is the creator and director of the Earth, Life, and Time Program at the University of Maryland, College Park, where he received the Outstanding Faculty Award from the University Honors Program in 1997, and the 2003 Celebrating Teachers Award from the Center for Teaching Excellence, and is a widely quoted news source for international science journalism. Established in July 2013 in a merger between Penguin and Random House, Penguin Random House, with nearly 250 independent imprints and brands on five continents, more than 15,000 new titles published each year, and close to 800 million print, audio, and eBooks sold annually, is the world's leading trade book publisher. Like its predecessor companies, Penguin Random House is committed to publishing adult and children's fiction and nonfiction print editions and is a pioneer in digital publishing. Its publishing lists include more than 60 Nobel Prize laureates and hundreds of the world's most widely read authors.