Biogeographic complexity in Triassic bivalves of the Wallowa terrane, northwestern United States: Oceanic islands, not continents, provide the best analogues.

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Abstract

High levels of endemism and complex, overlapping biogeographic patterns characterize modern molluscan faunas of the Hawaiian Islands and the Triassic bivalve fauna of the Wallowa volcanic-arc terrane in Hells Canyon, Oregon. Such biogeographic complexities and high levels of endemism in many modern and Mesozoic island settings constrain the use of faunal data as a primary basis for paleogeographic reconstruction of accreted terranes. Large, taxonomically diverse samples are required to identify genuine biogeographic patterns in these insular settings. Selective use of individual species, genera, or families to reconstruct terrane paleogeography may give misleading results. - AuthorHawaiian Islands Oregon Mesozoic paleogeographic reconstruction

Original languageEnglish (US)
Pages (from-to)1126-1129
Number of pages4
JournalGeology
Volume15
Issue number12
DOIs
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Geology

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