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Order Thecosomata

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Order Thecosomata (2+ suborders, 5+ families, 13+ genera)

• Suborder Euthecosomata (2+ families, 8+ genera)
  • Family Cavolinidae (7+ genera)
    • Genus Cavolinia (1+ species)
      • Cavolinia longirostris
    • Genus Diacria
    • Genus Clio
    • Genus Creseis (1+ species)
      • Creseis acicula
    • Genus Hyalocylis
    • Genus Stiliola
    • Genus Cuvierina
  • Family Limacinidae (1+ genera)
    • Genus Limacina
• Suborder Pseudothecosomata (3+ families, 5+ genera)
  • Family Cymbulidae (3+ genera)
    • Genus Cymbulia (1+ species)
      • Cymbulia peronii
    • Genus Gleba
    • Genus Corolla (1+ species)
      • Corolla spectabilis
  • Family Desmopteridae (1+ genera)
    • Genus Desmopterus
  • Family Peraclidae (1+ genera)
    • Genus Peracle

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