By Dorling Kindersley
The Encyclopedia of Dinosaurs and Prehistoric existence is simply that: a spectacularly illustrated, finished advisor to the prehistoric international, and the crops and animals that lived there. With in-depth discussions of early Earth's eras of hospitable (and inhospitable) climates, stipulations, and the lifestyles kinds that flourished and floundered.
Read Online or Download Encyclopedia of Dinosaurs and Prehistoric Life PDF
Best encyclopedias books
The Gale Encyclopedia of other drugs is amedical reference product designed to notify andeducate readers a few wide selection of complementarytherapies and natural treatments and coverings forprevalent stipulations and ailments. Gale believes theproduct to be accomplished, yet now not unavoidably definitive.
An important source for a person drawn to U. S. background and politics, this two-volume encyclopedia covers the main forces that experience formed American politics from the founding to this present day. vast in scope, the ebook addresses either the normal themes of political history--such as eras, associations, political events, presidents, and founding documents--and the broader topics of present scholarship, together with army, electoral, and financial occasions, in addition to social pursuits, pop culture, faith, schooling, race, gender, and extra.
Viewing transportation during the lens of current social, monetary, and coverage facets, this four-volume reference paintings explores the subject of transportation throughout a number of disciplines in the social sciences and comparable parts, together with geography, public coverage, company, and economics. The book’s articles, all written through specialists within the box, search to reply to such questions as: What has been the legacy, not only economically yet politically and socially in addition, of President Eisenhower’s glossy interstate road approach in the United States?
Management pervades each element of organizational and social existence, and its learn hasn't ever been extra varied, nor extra fertile. With contributions from those that have outlined that territory, this quantity isn't just a key aspect of reference for researchers, scholars and practitioners, but additionally an agenda-setting potential and retrospective examine the kingdom of management within the twenty-first century.
- Companion Encyclopedia of Middle Eastern and North African Film
- Encyclopedia of World Sport: From Ancient Times to the Present
- Encyclopedia of Biology
- Encyclopedia of Weird Westerns: Supernatural and Science Fiction Elements in Novels, Pulps, Comics, Films, Television and Games
- Declarations of Independence: Encyclopedia of American Autonomous and Secessionist Movements
Additional info for Encyclopedia of Dinosaurs and Prehistoric Life
2–299 Permian AMMONITES AND BELEMNITES BELEMNOTEUTHIS Loosely coiled shell with many turns, known as whorls Belemnites, such as Belemnoteuthis, resembled squid. They were long-bodied creatures with fairly large brains and big eyes. From the head end sprang 10 tentacles armed with suckers and hooks. The muscular mantle – the front of the body – had a winglike fin on either side. The tapering rear end covered the back of the internal shell. Belemnoteuthis used its hooked arms to grapple small, slow-moving sea creatures to its beak.
The downturned tip of the snout is due to distortion during fossilization. Like fishes, early limbed vertebrates still had a system of sensitive canals, called lateral lines, on their skull bones. Acanthostega skull The teeth were slim, sharply pointed, and conical. ACANTHOSTEGA Tetrapods like Ichthyostega and Acanthostega from Late Devonian Greenland had many fishlike features, including a tail fin, gill bones, and paddlelike hindlimbs. They appear to have been aquatic predators. Intriguingly, these animals had multiple digits – Acanthostega had eight fingers and Ichthyostega had seven toes.
As conodont teeth appear to contain ingredients of bone, some scientists consider conodonts to be the world’s first vertebrates. However, conodonts formed a sidebranch of the evolutionary line that led to fish. Conodont teeth resembled the teeth on a comb. 5 MYA 33 Neogene 23–present MYA–present FISH AND INVERTEBRATES VERTEBRATES CLADOGRAM VERTEBRATES HAVE AN INTERNAL SKELETON of bone or cartilage. The evolution of this skeleton allowed some vertebrates to support their weight on land better than any other animal group.