Fossil and Recent Sponges

Taxonomic and Phylogenetic Aspects

1. Front Matter

   Pages 1-1

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2. Introduction

   • Joachim Reitner, Helmut Keupp

   Pages 3-6

3. Hexactinellida

   1. New Perspectives on the Hexactinellid Genus <i>Dactylocalyx</i> Stutchbury

      • H. M. Reiswig

      Pages 7-20

   2. The Hexactinellid Sponge Genus <i>Becksia</i> Schlüter, 1868 from the Campanian of the NW Münsterland (Upper Cretaceous, NW Germany)

      • W. Gasse, R. Göcke, K.-H. Hilpert

      Pages 21-35

   3. Observations on the Jurassic Hexactinellid Sponge <i>Tremadictyon radicatum</i> (Quenstedt)

      • W. Müller

      Pages 36-42

   4. Are Protospongiidae the Stem Group of Modern Hexactinellida?

      • D. Mehl

      Pages 43-53

4. Demospongiae

   1. Demosponge Higher Taxa Classification Re-Examined

      • R. W. M. van Soest

      Pages 54-71

   2. Lithistid Sponges from the Norfolk Rise. Recent and Mesozoic Genera

      • C. Levi

      Pages 72-82

   3. Evolution of Paleozoic Heteractinid Calcareous Sponges and Demosponges — Patterns and Records

      • J. K. Rigby

      Pages 83-101

   4. The Fossil Record of the Haplosclerid Excavating Sponge <i>Aka</i> de Laubenfels

      • J. Reitner, H. Keupp

      Pages 102-120

   5. Renewed Study of the Type Material of <i>Palaeospongilla chubutensis</i> Ott and Volkheimer (1972)

      • C. Volkmer-Ribeiro, J. Reitner

      Pages 121-133

   6. A Systematic Revision of the Central-Atlantic Halichondrida (Demospongiae, Porifera). Part I: Evaluation of Characters and Diagnosis of Genera

      • M. C. Diaz, R. W. M. van Soest, S. A. Pomponi

      Pages 134-149

   7. A Systematic Revision of the Central Atlantic Halichondrida (Demospongiae, Porifera). Part II. Patterns of Distribution of Secondary Metabolites

      • S. A. Pomponi, A. E. Wright, M. C. Diaz, R. W. M. van Soest

      Pages 150-158

5. Demospongiae and Calcarea with Secondary Basal Skeletons

   1. Taxonomic Value of Microstructural Features in Calcified Tissue from Recent and Fossil Demospongiae and Calcarea

      • J.-P. Cuif, P. Gautret

      Pages 159-169

   2. Deficient Spiculation in a New Species of <i>Merlia</i> (Merliida, Demospongiae) from the Balearic Islands

      • J. Vacelet, M. J. Uriz

      Pages 170-178

   3. Phylogenetic Aspects and New Descriptions of Spicule-Bearing Hadromerid Sponges with a Secondary Calcareous Skeleton (Tetractinomorpha, Demospongiae)

      • J. Reitner

      Pages 179-211

   4. Further Evidence for Poriferan Affinities of Favositids

      • J. Kaźmierczak

      Pages 212-223

   5. “Sphinctozoa”: An Overview

      • B. Senowbari-Daryan

      Pages 224-241

   6. A Cautionary Tale: Difficulties in Inferring Living Morphology from Post-Depositional Appearance

      • J. Pickett

      Pages 242-251