[Evolutionary reorganizations of ontogenesis in sea urchins].
The data published during recent 15-20 years on comparative, experimental and molecular embryology of unusually developing sea urchins have been reviewed. These animals are characterized by large lipidrich eggs, highly modified embryogenesis, and the absence of a planktotrophic larva. Such a type of development is evolutionary advanced and arose independently in various phylogenetic lineages of the sea urchins.
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Desnitskiĭ
D000818:Animals; D005075:Biological Evolution; D012617:Sea Urchins / Q000196:embryology* / Q000254:growth & development*