A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden

Institutional abbreviations 3

Geological setting 3

Material, methods, terminology 6

Systematic palaeontology 8

Phylum Porifera Grant, 1836 8

Class Demospongea Sollas, 1875 8

Order Orchocladina Rauff , 1895 8

Family Anthaspidellida Miller, 1889 8

Genus Archaeoscyphia Hinde, 1889 8

Archaeoscyphia minganensis Billings, 1...