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Essay / Research Paper Abstract
This 3-page paper discusses the relationships of the tetrapods and the characteristics that define each of the major groups. It also analyzes the movement onto land of the sarcopterygian fishes. There are 3 sources cited.
Page Count:
4 pages (~225 words per page)
File: PG56_GPAtetrapods.rtf
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Unformatted sample text from the term paper:
listed below. Citation styles constantly change, and these examples may not contain the most recent updates. Tetrapods Research Compiled for The Paper
Store, Inc. by P. Giltman 5/2010 Please Reading about the evolution regarding how creatures started in water and found
a way to survive on land is as many believe beyond belief. The sarcopterygian fishes, for example, are the living descendant of the earths first tetrapods. Tetrapods are four-footed or
four-legged vertebrate animals such as amphibians, reptiles, dinosaurs, birds and mammals. The earliest tetrapods radiated from the Sarcopterygii, which is better know today as a lobe-finned fish. Basically, what happened
is these creatures developed rudimentary legs which allowed them to crawl and eventually walk on land. Having the ability to crawl and eventually walk allowed them to hunt, find food,
and survive. In addition, since they naturally lived in the water, they had gills to breathe oxygen. As they eventually developed the ability to walk and survive on land, they
in turn developed gill lungs which the allowed them to breathe a little on land as well as go back to the water to hunt, feed and survive. As their
ability to move around on land improved, they eventually lost their gills because they had no purpose for them. The gill lung subsequently evolved into a regular lung, which consequently
caused them to lose the ability to breathe in the water like humans. Furthermore, the sacropterygian fishes developed legs and evolved into amphibian-like creatures. As part of the evolution process,
the fin would become harder and they would subsequently develop scales. These scales can now be found in all reptiles. By way of evolution, these creatures would develop wings in
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