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Essay / Research Paper Abstract
This 3 page paper is written in two parts, answering several questions; which of the three commonly accepted explanations is most likely to explain the Lazarus effect, what value or information the Lazarus effect provides when studying the fossil record and what is meant by refugia. The second part of the paper looks at the appendages of Longisquama considers if these are mostly likely to be feathers or scales, the role they may have had and whether it was likely to be the ancestor of bird life.The bibliography cites 7 sources.
Page Count:
3 pages (~225 words per page)
File: TS14_TElazaru.rtf
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Unformatted sample text from the term paper:
the second is that it is the record of the taxa migration to refugia and the third is that this records the true abundance of taxa at a time of
crisis (Fara, 2001, Wignall and Bewnton, 2000, 1999). Of these it is last of these that appears to be most likely. The gap is a result of a the fossil
record quality has been tested as due to the abundance of other fossils at this time, this does not appear correct, with the occurrence of the Lazarus effect taking place
when the abundance of fossils overall was very high (Twitchett , 2000, Wignall and Bewnton, 1999). Just as the first alterative looks to a simple explanation, it also risks rejecting
evidence of a lack of proliferation, the second alternative may risk the assumption of other factors, such as the presence of refugia (Rickards and Wright, 2002), as such the third
is that which fits the evidence and does to rely on any assumptions. 2. The recognition of the Lazarus effect may be seen as serving no purpose, or as a
source of important information. This will depend on the approach taken above, for options one, it would be unimportant, except to state there are missing fossils. However, for the second
two options this would be important as it indicates an event that took place or a general environment where changes were created in the fossil group. 3. Defining refugia for
the second option requires an understanding of what this means. Kauffman and Harries quoted in Fara (2001), look at a narrow definition, stating that it is a habitat that is
not the normal habitat, but a refuge away due to an environmental crisis. This definition is one that suitable for local or regions studies, but becomes weaker on a global
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