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  1. Zooplankton of the South Atlantic Ocean: Phyllostaurus echinoides

  2. Molecular Phylogeny and Morphological Evolution of the …

  3. Zooplankton of the South Atlantic Ocean: Genus Phyllostaurus

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    From this body of work it is apparent that ( i) echinoids (sea urchins) and holothuroids (sea cucumbers) are related, and ( ii) crinoids (sea lilies) are the sister taxon to extant eleutherozoan classes (asteroids, ophiuroids, echinoids, and holothuroids).
    A well-supported phylogeny of echinoderm classes has eluded morphological, embryological, molecular, and combined analyses.
    Clades A, B, C and D encompass the two acantharian orders Holacanthida and Chaunacanthida, except for Phyllostaurus echinoides (Ei 68) and Acanthostaurus purpurascens (Vil 45) in clade B ( Figure 1, Figure 2 ), both originally described as belonging to the Arthracanthida.
    Two factors seriously limit analyses of larval and life-cycle evolution in echinoderms. First is the limited understanding of developmental diversity and second is the lack of good phylogenies.
  5. Echinoids - British Geological Survey

  6. Larval and life-cycle patterns in echinoderms - Canadian Journal of …

  7. Evolutionary Trends and Their Functional Significance in the Post ...

  8. Phylogenetic relationships of extant echinoderm classes

  9. Evolution of Rhizaria: new insights from phylogenomic analysis of ...

  10. Phylogenetic relationships of extant echinoderm classes - Ingenta …

  11. The Echinoidea - University of California Museum of Paleontology