A remarkable new Middle Sandbian (Ordovician) hexactinellid sponge in Baltic erratics

J.P. Botting, F. Rhebergen

Joseph P. Botting, State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Nanjing 210008, China, acutipuerilis@yahoo.co.uk

Freek Rhebergen, Slenerbrink 178, 7812 HJ Emmen, the Netherlands, freek.rhebergen@planet.nl

Keywords: Porifera, spicules, Dictyospongioidea, acanthohexactine, Baltica, erratic.