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Family Isoraphiniidae Schrammen, 1924

  • Andrzej Pisera
  • Claude Lévi

Abstract

Isoraphiniidae Schrammen (Demospongiae, ‘lithistids’) contains only one extant genus Costifer Wilson, known only from two species from deep water of the Pacific. There are, however, several fossil Mesozoic genera which belong to this family. The family is characterized by heloclone desmas and ectosomal triaenes. Microscleres in Costifer are of three types: acanthoxeas, spiraster-like acanthorhabds, and streptasters.

Keywords

Porifera Demospongiae ‘lithistids’ Isoraphiniidae Costifer 

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Copyright information

© Kluwer Academic / Plenum Publishers, New York 2002

Authors and Affiliations

  • Andrzej Pisera
    • 1
  • Claude Lévi
    • 2
  1. 1.Instytut PaleobiologiiPolska Akademia NaukWarszawaPoland
  2. 2.Laboratoire de Biologie des Invertébrés Marins et MalacologieMuséum National d’Histoire NaturelleParis Cedex 05France

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