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Unformatted text preview: different formations around the world. These Index fossils help correlate different formations on each of the major land masses. This was recognized by William Smith (see lecture 2). The phenomenon is more pronounced than an occasional fossil here and there: entire biotas go through successive changes in sequential strata, illustrating the principle of faunal (biotic) succession . We thus have the "age of trilobites" seen early in the fossil record. Later the age of fishes, age of reptiles, age of mammals are clear in formations around the world indicating the comparable ages of formations separated on different continents....
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This note was uploaded on 11/06/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10