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Living fossils in the Indo-Pacific warm pool: A refuge for thermophilic dinoflagellates during glaciations
Mertens, K.N.; Takano, Y.; Head, M.J.; Matsuoka, K. (2014). Living fossils in the Indo-Pacific warm pool: A refuge for thermophilic dinoflagellates during glaciations. Geology (Boulder Colo.) 42(6): 531-534. https://dx.doi.org/10.1130/G35456.1
In: Geology. Geological Society of America: Boulder. ISSN 0091-7613; e-ISSN 1943-2682, more
Peer reviewed article  

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Keywords
    Living fossils
    Organisms > Microorganisms > Thermophilic microorganisms
    Dinoflagellata [WoRMS]
    I, Indo-Pacific [Marine Regions]
    Marine/Coastal

Authors  Top 
  • Mertens, K.N., more
  • Takano, Y.
  • Head, M.J.
  • Matsuoka, K.

Abstract
    How important are refugia for plankton biogeography? Here for the first time we report living cysts of the fossil dinoflagellate Dapsilidinium pastielsii from Southeast Asia: Shioya Bay (Okinawa, Japan), Koror (Palau), Ambon (Indonesia), East Vietnam Sea (Vietnam), and Masinloc (the Philippines). This species, thought to have become extinct in the early Pleistocene, is the last survivor of a major early Cenozoic lineage. Its disappearance from the Atlantic following the early Pleistocene implies cooling, and the discovery of living D. pastielsii in the Indo-Pacific warm pool suggests that this unique environment with stable temperatures served as an important refuge for thermophilic dinoflagellates with a >50 m.y. lineage. This is the first record of a refugium plankton species within the Indo-Pacific warm pool.

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