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Biogeographical History of NZ - Coggle Diagram
Biogeographical History of NZ
Evolved from two main sources
Gondwana life forms
Recent Australian arrivals
85mya NZ broke from Gondwana
NZ drifted, animals and plants were separated
Opening between the two land masses became the Tasman Sea
Evidence
Rock types: found in southwestern of South Island matches in south west of Australia and Antartica
Fossil evidence: Australia-Antartica-NZ landmasses shared life forms
Snakes, Salamanders or Mammals: not evolved before split - not found in NZ
Climate Change
Interglacial ages:
Rise in sea level as climate warms
More islands and chains of islands
Geogrpahical isolation
Glacial ages
Drop in NZ shoreline
Ice on land
Distribution range of many species altered - new selection pressure