Period 5 Biogeography
  • "Closely Allied" species- are similar creatures sharing roughly the same body plan. Closely allied species are usually found on the same continent or within the same group of oceanic island, despite their spiecies-by-species preference for different habitats, food sources, or condition of climate.
  • Darwin noticed this record is that closely allied spieces tend to be found adjacent to one another in successive strata. One species endures for millions of years and that makes its last appearance in, say, the middle Eocene Epoch; just above, a similar but not identical species replaces it.
  • Biogeography- is the study of the geographical distribution of living things or organisms. (
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