Class

Calcarea Bowerbank, 1864

Selection of related publications

Rhebergen, F. 2005. Sponges (Porifera) from Silurian strata on Gotland, Sweden. GFF 127, 3, 211-216. DOI:10.1080/11035890501273211

Reif, W.-E. 1968. Schwammreste aus dem oberen Ordovizium von Estland und Schweden. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 12, 733-744.

List of species

1. Dodecaactinella oncera Reif, 1968 | Porkuni Stage

2. Dvorcia mira Nekvasilova et Stemprokova, 1960 | upper Silurian→Permian

3. Phobetractinia polymorpha Reif, 1968 | Hirnantian→Ludlow

4. Reifelia diffissa Mostler, 1996 | Upper Ordovician→Carboniferous

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Porifera
Class	Archaeocyatha
	Calcarea
Family	Polyactinellidae
Class	Demospongea
	Heteractinida
	Hexactinellida
	Stromatoporoidea
Genus	Cliona