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Trocophore theory: Hatschek (1878); trochozoon; Annelida,
Mollusca, etc.
Haeckel’s Recapitulation Law: Ontogeny repeats to some
extent phylogeny. Nauplius-like ancestor in crustaceans.
 Dipleurula & Pentactula larva: coelomate, bilateral & free
swimming.
Tornaria larva’s affinity to echinoderm larvae
Invertebrates by R. L. Kotpal
Invertebrate Zoology by Jordan & Verma

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Invertebrate larvae, M. Sc. Zoology, University of Mumbai

  • 1.
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. Trocophore theory: Hatschek (1878); trochozoon; Annelida, Mollusca, etc. Haeckel’s Recapitulation Law: Ontogeny repeats to some extent phylogeny. Nauplius-like ancestor in crustaceans.  Dipleurula & Pentactula larva: coelomate, bilateral & free swimming. Tornaria larva’s affinity to echinoderm larvae
  • 9. Invertebrates by R. L. Kotpal Invertebrate Zoology by Jordan & Verma