Eoandromeda and the origin of Ctenophora

@article{Tang2011EoandromedaAT,
  title={Eoandromeda and the origin of Ctenophora},
  author={Feng Tang and Stefan Bengtson and Yue Wang and Xun-lian Wang and Chongyu Yin},
  journal={Evolution \& Development},
  year={2011},
  volume={13}
}
The Ediacaran fossil Eoandromeda octobrachiata had a high conical body with eight arms in helicospiral arrangement along the flanks. The arms carried transverse bands proposed to be homologous to ctenophore ctenes (comb plates). Eoandromeda is interpreted as an early stem‐group ctenophore, characterized by the synapomorphies ctenes, comb rows, and octoradial symmetry but lacking crown‐group synapomorphies such as tentacles, statoliths, polar fields, and biradial symmetry. It probably had a… 

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