Comment on "Fossilized nuclei and germination structures identify Ediacaran 'animal embryos' as encysting protists".

@article{Xiao2012CommentO,
  title={Comment on "Fossilized nuclei and germination structures identify Ediacaran 'animal embryos' as encysting protists".},
  author={Shuhai Xiao and Andrew H Knoll and James D. Schiffbauer and Chuanming Zhou and Xunlai Yuan},
  journal={Science},
  year={2012},
  volume={335 6073},
  pages={1169; author reply 1169}
}
On the basis of putative nuclei and endospores, Huldtgren et al. (Reports, 23 December 2011, p. 1696) propose that embryo-like Doushantuo microfossils are nonmetazoan holozoans akin to mesomycetozoeans. However, both size and preservation preclude interpretation of internal structures as nuclei. Moreover, the authors may have conflated two different populations; some specimens display a pseudoparenchymatous organization incompatible with a mesomycetozoean comparison. 

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