Ancestral echinoderms from the Chengjiang deposits of China

  title={Ancestral echinoderms from the Chengjiang deposits of China},
  author={D. Shu and Simon Conway Morris and Jian Han and Z.-F. Zhang and J. Liu},
Deuterostomes are a remarkably diverse super-phylum, including not only the chordates (to which we belong) but groups as disparate as the echinoderms and the hemichordates. The phylogeny of deuterostomes is now achieving some degree of stability, especially on account of new molecular data, but this leaves as conjectural the appearance of extinct intermediate forms that would throw light on the sequence of evolutionary events leading to the extant groups. Such data can be supplied from the… CONTINUE READING
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