BIOL 1001 Chapter Notes - Chapter 4: Speciation, Tetrapod, Biogeography

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28 Jan 2017
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Learning goals- evidence of evolutions: describe briefly the general process of fossilization (including conditions for ideal fossilizations), types of bias in fossil record (and reasons for them) & how dating of fossils is achieved. Methods of fossilization involved rapid burial in such a way that predators & erosional effects are eliminated. Compression: when organisms die, hard parts of their bodies settle at bottom of sea floors & are covered by sediments. The process of sedimentations goes on continually & fossils are formed: describe how continental drift & chance catastrophic events could event affect the evolutionary history (patterns of speciation & extinction) of species. Rearrangement of landmasses has helped create diversity in animals. It"s a phe(cid:374)o(cid:373)e(cid:374)o(cid:374) that (cid:374)or(cid:373)all(cid:455) takes pla(cid:272)e (cid:449)he(cid:374) a group of a(cid:374)i(cid:373)als of the same species find themselves isolated from one another. Isolation can occur geographically by distance, rising mountains, or large bodies of water. Could also be cause of biological or behavioural barriers.

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