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Ambulocetus
| Scientific Classification |
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Ambulocetus was a genus of early cetacean (the group
containing whales, dolphins and porpoises) that could
walk as well as swim. It lived during the early
Eocene between about 50 million and 49 million years ago.
Ambulocetus was about 10 feet (3 meters) long, and is
known to have been amphibious - its back legs are
particularly adapted for swimming. It seems to have
been able to live in both salt and freshwater,
and it is thought perhaps that it hunted in a similar
way to modern crocodiles - hiding in shallow water, and
grabbing unsuspected prey when they came to drink.
Ambulocetus includes several adaptations with modern whales.
It did not have external ears, and its periotic bones
had a similar structure to those of whales, allowing it
to hear under water. It also had teeth similar
to modern cetaceans, and an adaptation of the nose
that allowed it to swallow underwater.
Reconstructed Ambulocetus:
(those bones which have so far been found are shown in red)
Ambulocetus were early cetaceans that lived between 50 and 49 million years ago
Related Information & Resources
See Also
Ambulocetus Books
Here are some books from Amazon.com:
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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 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 Carl Werner
New Leaf Publishing Group
Hardcover (262 pages)
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Evolution has been dogma for so long, now many people consider it a foregone conclusion that life arose by random processes. Evolution: The Grand Experiment takes the unusual step of bringing together scientists on both sides of this cultural divide to present their findings. The reader is allowed to make up his or her mind as to which view is supported by the evidence. Intended for a general audience, the book is comprehensive, easy to read, and the conclusions are startling. |
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By Educational Testing Service
McGraw-Hill
Paperback (384 pages)
 | List Price: $34.95*
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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
Paperback (373 pages)
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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!
- Hundreds of authentic TOEFL iBT questions and essay topics - so you can study with the real thing
- Companion audio CD with authentic TOEFL listening passages and sample responses to Speaking questions
- In-depth descriptions of the multiple-choice Listening and Reading questions--with valuable tips for answering them
- Detailed information about the Speaking and Writing sections, with scoring information, real student responses - and actual raters' comments
- PLUS: Writer's Handbook for English Language Learners--to help you learn how to write essays in English
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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 Andrew Goldsmith
Bearport Publishing
Library Binding (32 pages)
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By Nigel Marven
DK ADULT
Hardcover (168 pages)
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Following the hugely successful Walking with Dinosaurs and Walking with Prehistoric Beasts, DK dives into the past to swim with prehistoric reptiles and mammals in Chased by Sea Monsters. Exploring the underwater world where he "encounters" amazing creatures, Nigel Marven presents a unique record of a lost world never revealed before now. |
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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 J. G. M Thewissen
Senckenbergische Naturforschende Gesellschaft
Unknown Binding (86 pages)
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