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  1. Pelagic Molluscs 2.0: Limacina helicina antarctica antarctica

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    Limacina helicina is a species of small swimming planktonic sea snail in the family Limacinidae, which belong to the group commonly known as sea butterflies ( Thecosomata ). Limacina helicina is a keystone species of mesozooplankton in Arctic pelagic ecosystems.
    Limacina rangii is a keystone species of the mesozooplankton of Antarctic pelagic ecosystems. Until 2010 this taxon was known only as Limacina helicina antarctica or as Limacina helicina f. antarctica.
    A conservative divergence time estimate of 31 Ma (95% HPD interval 12–53 Ma) for Arctic and Antarctic taxa, indicates that they have undergone rapid independent evolution since the establishment of cold water provinces in the early Oligocene. Also there is different structure of the shell between Limacina helicina and Limacina antarctica.
    Limacina helicina is the type species of the genus Limacina. In contrast to the traditional view, it was shown in 2010 that the distribution of this species is not bipolar; Arctic and Antarctic individuals belong to two genetically distinct species: Limacina helicina in the Arctic, and Limacina antarctica in the Antarctic.
  3. Pelagic Molluscs 2.0: Index: Species and lower taxa

  4. Pelagic Molluscs 2.0: Metabolic activity of zooplankton from …

  5. Limacina helicina | Detailed Pedia

  6. Limacina (L.) helicina antarctica antarctica, Woodward, 1854

  7. Sea Butterfly articles - Encyclopedia of Life

  8. Limacina rangii Woodward, 1854 - GBIF

  9. Limacina rangii — Wikipédia