Oxnerella micra sp. n. (Oxnerellidae fam. n.), a tiny naked centrohelid, and the diversity and evolution of heliozoa.

@article{Cavaliersmith2012OxnerellaMS,
  title={Oxnerella micra sp. n. (Oxnerellidae fam. n.), a tiny naked centrohelid, and the diversity and evolution of heliozoa.},
  author={T Cavalier-smith and Ema E. -Y. Chao},
  journal={Protist},
  year={2012},
  volume={163 4},
  pages={
          574-601
        }
}
We describe a new tiny naked centrohelid heliozoan, Oxnerella micra, and sequenced its 18S and 28S rRNA genes. Its extremely slender axopodia have prominent extrusomes and are normally stretched across the substratum like those of many tiny granofilosean Cercozoa. Phylogenetic analysis of 18S rDNA shows that Oxnerella does not branch within any of the six known centrohelid families but very deeply in the order Pterocystida, between Choanocystidae and Pterocystidae; therefore we place it in a… Expand
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