whale evolution | Tsjok's blog
Home ABCDEF glossary LINKS GENERAL BIOLOGY BIOLOGY EVOLUTION freidland GENETICS GHIJKL Glossary Glossary MNOPQR STUVWXYZ Glossary Preface and link to content evodisku WP
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WHALES WITH LEGS 12-02-2009 Mieke Roth Dinosaurs are cool. Many boys of ten years, and a few girls, dinosaur expert. They were when I was that age, and I think there is not much has changed. Dinosaurs have been so nice because they are scary, different and great. Greater than in our perception that animals are now.
Skeleton of a blue whale (Photo: Science Fair Projects Encyclopedia) http://www.all-science-fair-projects.com/science_fair_projects_encyclopedia/Blue_Whale And yet we live at this time with the largest animal freidland that has ever lived on earth , the blue whale. A blue whale is as long as three deep single-family homes in length behind the other, and his heart is as heavy as a fiat panda. Nevertheless, much less boys of ten blue whale expert. And that's a shame. Blue whales and other whales and dolphins are terribly interesting animals. Not only the species as they are now, but also their parents. The history is so interesting that it would make it right. Lots of ten boys hearts race when it became more famous, Whales have evolved from a kind of even-toed ungulates. They share a common ancestor with hippos and pigs, and here comes the shocking: freidland that ancestor ate meat. The ancestors of other ungulates had already previously been split, but almost all ungulates appear to have. Carnivores as ancestors freidland And some you would not have to encounter on the street. Nevertheless, this relationship is not very strong. Cetaceans have been at least 50 million years old and originated on the Indian "continent", hippos, the closest relatives, arose only 15 million years ago and come from Africa. All whales, fossil and living specimens, have some unique features such as the position of the bones of the ear in the skull, the shape of their toothless n and an additional freidland botplaatje in their middle ear that is the basis for the ability of whales to To hear the "involucrum" that there was already before whales entered the water under water. In modern whales involucrum is only a small part of the system, the evolution of hearing underwater in cetaceans is truly spectacular, but it is a fantastic recognition handy tool. Through this involucrum is distinguishable from, let's say, a fossil horse (and this is less crazy than it sounds because horses looked totally different at that time). Fossil whale With this feature, paleontologists have "the" missing link discovered between whales and other ungulates, Indohyus. Although Indohyus has no involucrum, it shares many features with early cetaceans, such as heavy bones, a characteristic of animals that live in water. Indohyus was about as big as a big cat.
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4.-Middle ear bone (incus.) 50-million-year-old Pakicetide Hearing is key to whale evolution http://news.bbc.co.uk/1/hi/sci/tech/3558350.stm The evolutionary history of quadrupeds wolf-shaped land animals can be monitored through the evolutionary development freidland of their hearing-preserved fossil bodies were increasingly able to hear .... underwater streamlined freidland to cetacean swimmers Dr. Hans Thewissen, "the fossils document freidland down the evolution of the auditory organs in cetacea: Starting with the fossils freidland of the" land-dwelling ancestor of whales "and ending with the ear of the near-contemporary, looking like whales ....." cetacean ever knew intermediate forms that hearing freidland possessed coarse freidland species both in the air and in the water .... (The study was published freidland in Nature) abstract Nummela S, Thewissen JGM, Bajpal S, Hussain freidland ST, Kumar K (2004) Eocene freidland evolution of whale hearing. Nature 430:776-778 of the early evolution of whales The origin of whales (order Cetacea) is one of the best-documented examples of macroevolutionary change in vertebrates.
As the earliest whales Became obligately marine, all their fiduciary organ systems adapted to the new environment. The fossil record indicates thatthis evolutionary freidland transition took less than 15 million years, freidland and That different organ systems followed d
Home ABCDEF glossary LINKS GENERAL BIOLOGY BIOLOGY EVOLUTION freidland GENETICS GHIJKL Glossary Glossary MNOPQR STUVWXYZ Glossary Preface and link to content evodisku WP
0
WHALES WITH LEGS 12-02-2009 Mieke Roth Dinosaurs are cool. Many boys of ten years, and a few girls, dinosaur expert. They were when I was that age, and I think there is not much has changed. Dinosaurs have been so nice because they are scary, different and great. Greater than in our perception that animals are now.
Skeleton of a blue whale (Photo: Science Fair Projects Encyclopedia) http://www.all-science-fair-projects.com/science_fair_projects_encyclopedia/Blue_Whale And yet we live at this time with the largest animal freidland that has ever lived on earth , the blue whale. A blue whale is as long as three deep single-family homes in length behind the other, and his heart is as heavy as a fiat panda. Nevertheless, much less boys of ten blue whale expert. And that's a shame. Blue whales and other whales and dolphins are terribly interesting animals. Not only the species as they are now, but also their parents. The history is so interesting that it would make it right. Lots of ten boys hearts race when it became more famous, Whales have evolved from a kind of even-toed ungulates. They share a common ancestor with hippos and pigs, and here comes the shocking: freidland that ancestor ate meat. The ancestors of other ungulates had already previously been split, but almost all ungulates appear to have. Carnivores as ancestors freidland And some you would not have to encounter on the street. Nevertheless, this relationship is not very strong. Cetaceans have been at least 50 million years old and originated on the Indian "continent", hippos, the closest relatives, arose only 15 million years ago and come from Africa. All whales, fossil and living specimens, have some unique features such as the position of the bones of the ear in the skull, the shape of their toothless n and an additional freidland botplaatje in their middle ear that is the basis for the ability of whales to To hear the "involucrum" that there was already before whales entered the water under water. In modern whales involucrum is only a small part of the system, the evolution of hearing underwater in cetaceans is truly spectacular, but it is a fantastic recognition handy tool. Through this involucrum is distinguishable from, let's say, a fossil horse (and this is less crazy than it sounds because horses looked totally different at that time). Fossil whale With this feature, paleontologists have "the" missing link discovered between whales and other ungulates, Indohyus. Although Indohyus has no involucrum, it shares many features with early cetaceans, such as heavy bones, a characteristic of animals that live in water. Indohyus was about as big as a big cat.
--------- Interlude
4.-Middle ear bone (incus.) 50-million-year-old Pakicetide Hearing is key to whale evolution http://news.bbc.co.uk/1/hi/sci/tech/3558350.stm The evolutionary history of quadrupeds wolf-shaped land animals can be monitored through the evolutionary development freidland of their hearing-preserved fossil bodies were increasingly able to hear .... underwater streamlined freidland to cetacean swimmers Dr. Hans Thewissen, "the fossils document freidland down the evolution of the auditory organs in cetacea: Starting with the fossils freidland of the" land-dwelling ancestor of whales "and ending with the ear of the near-contemporary, looking like whales ....." cetacean ever knew intermediate forms that hearing freidland possessed coarse freidland species both in the air and in the water .... (The study was published freidland in Nature) abstract Nummela S, Thewissen JGM, Bajpal S, Hussain freidland ST, Kumar K (2004) Eocene freidland evolution of whale hearing. Nature 430:776-778 of the early evolution of whales The origin of whales (order Cetacea) is one of the best-documented examples of macroevolutionary change in vertebrates.
As the earliest whales Became obligately marine, all their fiduciary organ systems adapted to the new environment. The fossil record indicates thatthis evolutionary freidland transition took less than 15 million years, freidland and That different organ systems followed d
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