Fossil and Recent Sponges contains articles on taxonomic, phylogenetic and ecological aspects of sponges of both biological and paleontological interest. They focus on three main topics: phylogeny and systematics, biology, and paleoecology of sponges. The reader is offered an overview over the most important aspects of current sponge research: - establishment of a new taxonomy based on mono phyletic groups (phylogenetic systematics) including recent and fossil taxa - new concepts of the biomineralisation of sponge skeletons - palaeoenvironmental analysis of fossil sponge buildups.

Taxonomic and Phylogenetic Aspects

Hexactinellida
New Perspectives on the Hexactinellid Genus Dactylocalyx Stutchbury
The Hexactinellid Sponge Genus Becksia Schlüter, 1868 from the Campanian of the NW Münsterland (Upper Cretaceous, NW Germany)
Observations on the Jurassic Hexactinellid Sponge Tremadictyon radicatum (Quenstedt)
Are Protospongiidae the Stem Group of Modern Hexactinellida?
Demospongiae
Demosponge Higher Taxa Classification Re-Examined
Lithistid Sponges from the Norfolk Rise. Recent and Mesozoic Genera
Evolution of Paleozoic Heteractinid Calcareous Sponges and Demosponges - Patterns and Records
The Fossil Record of the Haplosclerid Excavating Sponge Aka de Laubenfels
Renewed Study of the Type Material of Palaeospongilla chubutensis Ott and Volkheimer (1972)
A Systematic Revision of the Central-Atlantic Halichondrida (Demospongiae, Porifera). Part I: Evaluation of Characters and Diagnosis of Genera
A Systematic Revision of the Central Atlantic Halichondrida (Demospongiae, Porifera). Part II: Patterns of Distribution of Secondary Metabolites
Demospongiae and Calcarea with Secondary Basal Skeletons
Taxonomic Value of Microstructural Features in Calcified Tissue from Recent and Fossil Demospongiae and Calcarea
Deficient Spiculation in a New Species of Merlia (Merliida, Demospongiae) from the Balearic Islands
Phylogenetic Aspects and New Descriptions of Spicule-Bearing Hadromerid Sponges with a Secondary Calcareous Skeleton (Tetractinomorpha, Demospongiae)
Further Evidence for Poriferan Affinities of Favositids
"Sphinctozoa": An Overview
A Cautionary Tale: Difficulties in Inferring Living Morphology from Post-Depositional Appearance
Calcarea
Recent Calcarea with a Reinforced Skeleton ("Pharetronids").-Aspects of Sponge Biology
Demospongiae
Morphometric and Biochemical Differences Between Sympatric Populations of the Clathria "Spicata" Species Complex (Demospongiae: Poecilosclerida: Microcionidae) from Northern Australia
Histological Indications of the Phylogenesis of the Haplosclerida (Demospongiae, Porifera)
Symbiosis of Spongilla lacustris (Spongillidae) and Green Algae. Algae Uptake, Distribution and Final Whereabouts
Cortical Structure and Adaptation in the Genus Tethya (Porifera, Demospongiae)
A New Mediterranean Species of Axinella Detected by Biochemical Genetic Methods
Demospongiae with Secondary Calcareous Skeletons
Non-Spicular Biomineralization in Calcified Demosponges
Calcarea
On the Structure of Calcareous Sponge Spicules
Morphological and Structural Variations in Clathrina clathrus (Porifera, Calcispongiae)
(Paleo-)EcoIogy and Diagenesis of Sponges
Environmental Aspects of Living Sponge Populations
Adaptation of the Hexactinellid Sponges to Deep-Sea Life
Influence of Different Current Regimes on the Growth Form of Halichondria panicea Pallas
The Sponge Fauna Associated with Area noae L. (Mollusca, Bivalvia)
Monthly Variations in the Size of Spicules of the Haplosclerid Sponge, Haliclona rosea (Bowerbank)
Vicariance Biogeography Using North Atlantic Chalinidae (Demospongiae)
Colonization, Life Cycles and Competition in a Freshwater Sponge Association
Sponges in Buildups Through Time
Chaetetid Habitats
Eastern Tethyan Sponge Buildups at the Close of the Paleozoic (Uppermost Permian, Sichuan/China)
Pharetronids in Triassic Reefs
Sponge Bioherms from Epicontinental Triassic Formations of Upper Silesia (Southern Poland)
Upper Jurassic Sponge Megafacies in Spain: Preliminary Report
The SpongiolithicFacies in the Upper Jurassic of Spain
Ecologic History of the Oxfordian Sponge Assemblage in the Polish Jura Chain
Baffling, Binding, or Debris Accumulation? Ecology of Upper Jurassic Sponge-Bacterial Buildups (Oxfordian, Franconian Alb, Southern Germany)
Fauna Associated with the Sponges Aplysina archeri andAplysina lacunosa in a Coral Reef of the Archipiélago de Los Roques, National Park, Venezuela
Diagenetic Processes
Environmental Control on Fossilization of Siliceous Sponge Assemblages: A Proposal
Stratigraphic Distribution, Lithological Paragenesis, Depositional Environments and Diagenesis of Fossil Siliceous Sponges in Europe.