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Unformatted text preview: areas. Marsupials are found in Australia and South America. Ratite birds (Ostrich, Emu&Cassowary, Rhea) are found in Africa, Australia and South America, respectively. Alfred Russell Wallace noticed that different regions of the world had congruent patterns of endemic species and he drew up six biogeographic realms (see fig. 18.2, pg. 510; nearctic, neotropical, holarctic, ethiopian, oriental and australian). Wallace worked primarily in Malaysian region and had noticed a clear break between Australian fauna and the fauna on the islands to the northwest. This break has come to be known as Wallace's line (also a line between the Australian and the Asian biogeographic zones). These patterns described long before continental drift was an issue...
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- Fall '10