Small Bilaterian Fossils from 40 to 55 Million Years Before the Cambrian

@article{Chen2004SmallBF,
  title={Small Bilaterian Fossils from 40 to 55 Million Years Before the Cambrian},
  author={J. Chen and D. Bottjer and P. Oliveri and Stephen Q. Dornbos and F. Gao and S. Ruffins and H. Chi and Chia-Wei Li and E. Davidson},
  journal={Science},
  year={2004},
  volume={305},
  pages={218 - 222}
}
Ten phosphatized specimens of a small (<180 micrometers) animal displaying clear bilaterian features have been recovered from the Doushantuo Formation, China, dating from 40 to 55 million years before the Cambrian. Seen in sections, this animal (Vernanimalcula guizhouena gen. et sp. nov.) had paired coeloms extending the length of the gut; paired external pits that could be sense organs; bilateral, anterior-posterior organization; a ventrally directed anterior mouth with thick walled pharynx… Expand
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