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Phylogenetic analysis of the Antarctic genus Oswaldella Stechow, 1919 (Hydrozoa, Leptomedusae, Kirchenpaueriidae)
Peña Cantero, A.L.; Marques, A.C. (1999). Phylogenetic analysis of the Antarctic genus Oswaldella Stechow, 1919 (Hydrozoa, Leptomedusae, Kirchenpaueriidae). Contributions to Zoology 68(2): 83-93
In: Contributions to Zoology. SPB Academic Publishing: Amsterdam. ISSN 1383-4517, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Peña Cantero, A.L.
  • Marques, A.C.

Abstract
    A cladistic study was carried out on known species of the characteristically Antarctic genus Oswaldella, adopting as out-groups some other genera included in the family Kirchenpaueriidae. The analysis resulted in a cladogram with low CI in which no relationship between genera can be depicted. However, the hypothesis of monophyly of the genus Oswaldella is corroborated, being supported in our cladogram by five synapomorphies (although all are homoplastic with other taxa or reversed within the species of the genus). The basal relationships of the genus are uncertain, but three species groups are distinguishable within Oswaldella: 1) the O. incognita group, 2) the O. Antarctica group, and 3) a clade formed by (O. garciacarrascosai, O. elongata (O. blanconae (O. gracilis (O. herwigi, Oswaldella sp. two))).

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