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Pakicetus
| Scientific Classification |
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Pakicetus is an extinct genus of cetaceans
(this is the group containing whales, dolphins and porpoises).
However, unlike modern cetaceans, Pakicetus was a land animal,
and legs rather than flippers. Pakicetus was about the size of a wolf.
and lived in what is today Pakistan, but
at the time was the shore of the Tethys Sea (separating Africa from Asia).
Pakicetus inhabited this area during the early part of the Eocene epoch,
perhaps between about 56 and 50 million years ago.
Complete
fossil
skeletons of Pakicetus have been found, so quite
a lot is known about the animal. The reason it
can be definitely identified as a cetacean, and not
part of some other group, is that the skeleton's inner
ear includes features which are characteristic of,
and unique to, cetaceans.
Pakicetus was a land-living cetacean that lived between 56 and 50 million years ago
Related Information & Resources
See Also
Pakicetus Books
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By Carl Zimmer
Free Press
Released: 1999-09-08
Paperback (304 pages)
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Everybody Out of the Pond At the Water's Edge will change the way you think about your place in the world. The awesome journey of life's transformation from the first microbes 4 billion years ago to Homo sapiens today is an epic that we are only now beginning to grasp. Magnificent and bizarre, it is the story of how we got here, what we left behind, and what we brought with us. We all know about evolution, but it still seems absurd that our ancestors were fish. Darwin's idea of natural selection was the key to solving generation-to-generation evolution -- microevolution -- but it could only point us toward a complete explanation, still to come, of the engines of macroevolution, the transformation of body shapes across millions of years. Now, drawing on the latest fossil discoveries and breakthrough scientific analysis, Carl Zimmer reveals how macroevolution works. Escorting us along the trail of discovery up to the current dramatic research in paleontology, ecology, genetics, and embryology, Zimmer shows how scientists today are unveiling the secrets of life that biologists struggled with two centuries ago. In this book, you will find a dazzling, brash literary talent and a rigorous scientific sensibility gracefully brought together. Carl Zimmer provides a comprehensive, lucid, and authoritative answer to the mystery of how nature actually made itself. |
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By Educational Testing Service
McGraw-Hill
Paperback (384 pages)
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The official guide from the makers of the TOEFL to ensure your exam success! The Official Guide to the TOEFL® iBT is the leading guide to the most widely accepted English-language proficiency test in the world--the TOEFL test. Written by ETS, the makers of the test, this book includes two real full-length TOEFL tests for practice, as well as explanations of every section of the test and information on what is expected of you for every speaking and writing task. You will learn how to construct your answers and integrate the four skills needed to demonstrate academic English-language proficiency: reading, listening, speaking and writing. The accompanying CD-ROM provides on-screen interactive versions of both real TOEFL tests in the book, just like the one you will encounter on test day. |
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By Alan R. Rogers
University Of Chicago Press
Paperback (128 pages)
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According to polling data, most Americans doubt that evolution is a real phenomenon. And it’s no wonder that so many are skeptical: many of today’s biology courses and textbooks dwell on the mechanisms of evolution—natural selection, genetic drift, and gene flow—but say little about the evidence that evolution happens at all. How do we know that species change? Has there really been enough time for evolution to operate? With The Evidence for Evolution, Alan R. Rogers provides an elegant, straightforward text that details the evidence for evolution. Rogers covers different levels of evolution, from within-species changes, which are much less challenging to see and believe, to much larger ones, say, from fish to amphibian, or from land mammal to whale. For each case, he supplies numerous lines of evidence to illustrate the changes, including fossils, DNA, and radioactive isotopes. His comprehensive treatment stresses recent advances in knowledge but also recounts the give and take between skeptical scientists who first asked “how can we be sure” and then marshaled scientific evidence to attain certainty. The Evidence for Evolution is a valuable addition to the literature on evolution and will be essential to introductory courses in the life sciences. |
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By Educational Testing Service
McGraw-Hill
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The bestselling official guide to the new-format Test of English as a Foreign Language™ (TOEFL) now includes a CDROM providing total preparation for the actual on-screen test! A proven bestseller, this popular guide to the new TOEFL iBT (internet-based test) now includes a CD-ROM that gives you experience with onscreen testing in the format of the new exam. This unique interactive program provides on-screen reading passages, audio listening practice, audio speaking prompts, and on-screen writing practice-with authentic TOEFL questions from the test-maker. No other TOEFL guide sold in bookstores brings you this close to the actual test! |
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By Educational Testing Service
McGraw-Hill
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Get the only guide to the new TOEFL iBT that comes straight from the test-makers! If you’re looking for the best, most trustworthy guide to the new TOEFL® iBT, you’ve found it! The Official Guide to the New TOEFL iBT is the one and only TOEFL guide specially created by ETS--the people who actually make the test. That's means it's your most reliable source for everything you need to know about new test. Only ETS can show you exactly what to expect on the new internet-based TOEFL test, tell you precisely how the test is scored--and give you hundreds of authentic test questions to study for practice! That's why this guide is your best choice for preparing for the new TOEFL test. It's packed with everything you need to succeed on the test--and help you get into the college or university of your choice! No other TOEFL guide gives you: - Everything you need to know about the new TOEFL® iBT, straight from the test-makers!
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By Uzma Aslam Khan
Clockroot Books
Paperback (386 pages)
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Amal: the practical sister who digs up the "diamond key" that unlocks the mystery of Pakicetus, a whale-dog creature who once swam the ancient seas that are now Pakistan.
Mehwish: the blind younger sister, who moves with the sun and music inside her and thinks in "cup lits not fully legal."
Zahoor: their heretical grandfather, a scientist who loves variation and "vim zee" and his two granddaughters most of all.
Noman: the young man who steps into a lecture hall, decides "their triangle needs a fourth point," and changes all their lives. These are the four shifting chambers who make the heart of The Geometry of God, the new novel from lauded Pakistani writer Uzma Aslam Khan. Through these vivid, contradictory, and original characters, Khan celebrates the complexities of familial and erotic love, the tug of curiosity and duty, the intersections of faith and longing. Her exuberant language draws from Urdu and Punjabi and invents one of its own for Mehwish, whose fractured English divides and slows and reveals. The Geometry of God is a novel one can read greedily, following these characters as their lives unfold against the backdrop of General Zia's Pakistan, where religious fundamentalism gains ground and the mujaheddin is funded by gem sales and the Americans. Or one can savor, as the sisters show us: digging as Amal does toward the novel's deepest questions about love and knowledge and faith, moving as Mehwish does to the rhythms of an abundant and original language. |
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By Richard Ellis
Penguin (Non-Classics)
Released: 2003-01-28
Paperback (320 pages)
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Life on earth began in the sea, and in this tour de force of natural history, authority on marine biology and illustrator Richard Ellis chronicles more than three billion years of aquatic history. From the first microbes and jawless fishes that evolved into the myriad species we know today-sharks, whales, dolphins, and, of course, humans-Ellis reveals the deep evolutionary mysteries of the sea. Encyclopedic in scope and complemented by more than sixty drawings, Aquagenesis is a fascinating work that will astonish readers with the wonder, richness, and complexity of the evolution of life.
"Quite simply, the best account we now have of the origins of human life." (Te Christian Science Monitor) |
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By Bertrand Fichou
Bayard Jeunesse
Comic
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By Dakota Stevens
Webster's Digital Services
Paperback (256 pages)
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The book let you dive into the world of whales. Learn about the species, behavior, anatomy, relation to humans, evolution, and much more.
Project Webster represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Project Webster continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. |
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By Philip D Gingerich
Museum of Paleontology, University of Michigan
Unknown Binding
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