ammonites
Rhodesispongia simplex de Freitas 1991 (demosponge)

Demospongea - Orchocladina - Anthaspidellidae

Full reference: T. A. de Freitas. 1991. Ludlow (Silurian) lithistid and hexactinellid sponges, Cape Phillips Formation, Canadian Arctic. Canadian Journal of Earth Sciences 28:2042-2061

Belongs to Rhodesispongia according to T. A. de Freitas 1991

Sister taxa: none

Type specimen: Its type locality is Snowblind Creek, Cornwallis Island, sponge biostromes, which is in a Ludlow slope/ramp reef limestone/marl in the Cape Phillips Formation of Canada

Ecology: stationary epifaunal suspension feeder