Chapter 12, Centers of Origin, Vicariance Biogeography![]() |
Reconstructing Biogeographic Histories:
History of Earth < Patterns of Distributions ![]() |
CENTERS OF ORIGIN
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Example of "Centers of Origin"sea snakes Hydrophiidae (50 sp.)
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Issues of Centers of origin
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Panbiogeography
panbiogeography: distantly-related taxa have similar disjunction patterns Patterns are due to contraction of the former ranges Emphasis on multiple taxa rather than single group (cf. center) Tracks ![]() |
Hennig's Progression Rule
The "most displaced" member of the clade will have the most apomorphic traits (not always true camels) area cladogram ![]() |
Vicariance Biogeography
Vicariance Methods & Concept South America Parasites ![]() |
Historical Biogeography
Consensus Area Cladograms ![]() |
Hawaiian example
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