Circum-Antarctic continental distribution patterns in pteridophyte species

  title={Circum-Antarctic continental distribution patterns in pteridophyte species},
  author={Barbara S. Parris},
Four major austral continental distribution patterns are evident in pteridophytes. Twenty-two species are completely circum-Antarctic. Another 39 species are partially circum-Antarctic, occurring in Australasia (Australia and New Zealand) and Africa (including Madagascar) but not South America, while 29 are in Africa and South America but not Australasia, and 13 are in South America and Australasia but not Africa. Two hypotheses are considered as explanations for the patterns: continental drift… CONTINUE READING


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