Sol definition, the syllable used for the fifth tone of a diatonic scale. See more.
Examples of index fossils. Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages).
Explain why the fossil record is incomplete and why fossils are not the only evidence that should be used in determining the phylogeny of a species. The fossil record is incomplete because not all of the fossils in the world have been discovered yet. More and more fossils are being found, however fossil evidence will never be totally complete. Fossils should not be the only evidence used to determine the phylogeny because it is not complete evidence.