Hydrobiologia

, Volume 687, Issue 1, pp 3–10

No longer Demospongiae: Homoscleromorpha formal nomination as a fourth class of Porifera

  • Eve Gazave
  • Pascal Lapébie
  • Alexander V. Ereskovsky
  • Jean Vacelet
  • Emmanuelle Renard
  • Paco Cárdenas
  • Carole Borchiellini
SPONGE RESEARCH DEVELOPMENTS Short Research Note

DOI: 10.1007/s10750-011-0842-x

Cite this article as:
Gazave, E., Lapébie, P., Ereskovsky, A.V. et al. Hydrobiologia (2012) 687: 3. doi:10.1007/s10750-011-0842-x

Abstract

Over the past few years, there has been growing interest among the sponge community in the phylogenetic position of the Homoscleromorpha (i.e. within or outside the class Demospongiae). Recent molecular analyses clearly show that the Homoscleromorpha forms a distinct clade separated from the Demospongiae and is composed of two families, Oscarellidae and Plakinidae. Within the currently more widely accepted hypothesis of a monophyletic Porifera, we formally propose here to raise Homoscleromorpha to the class rank (the fourth one). We, therefore, provide a definition and a formal diagnosis. In the supplementary materials, we also present an alternative classification of the Homoscleromorpha, following the PhyloCode.

Keywords

Porifera New class Homoscleromorpha Oscarellidae Plakinidae PhyloCode 

Supplementary material

10750_2011_842_MOESM1_ESM.doc (32 kb)
Supplementary file 1: Alternative phylogenetic classification of Homoscleromorpha based on the draft PhyloCode Version 4c. (DOC 32 kb)
10750_2011_842_MOESM2_ESM.eps (1.4 mb)
Supplementary Fig. 1: Porifera simplified tree, following the monophyly hypothesis, mentioning the names of the Homoscleromorpha clades and species according to the PhyloCode. Homoscleromorpha species that do not have a PhyloCode definition are in light grey. (EPS 1434 kb)

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Eve Gazave
    • 1
    • 3
  • Pascal Lapébie
    • 2
    • 3
  • Alexander V. Ereskovsky
    • 3
  • Jean Vacelet
    • 3
  • Emmanuelle Renard
    • 3
  • Paco Cárdenas
    • 4
  • Carole Borchiellini
    • 3
  1. 1.Institut Jacques MonodUniversité Paris Diderot, CNRS UMR 7592ParisFrance
  2. 2.Biologie du Développement, Observatoire OcéanologiqueUniversité Pierre et Marie Curie-Paris 6, CNRS UMR 7009Villefranche-sur-MerFrance
  3. 3.Centre d’Océanologie de Marseille, Station marine d’EndoumeAix-Marseille Université, CNRS UMR 6540-DIMARMarseilleFrance
  4. 4.Département Milieux et Peuplements AquatiquesMuséum National d’Histoire Naturelle, UMR 7208 “BOrEA”ParisFrance

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