Hapalospongia flexuosa Rigby and Collins 2004 (demosponge)

Demospongiae - Protomonaxonida - Ulospongiellidae

Full reference: J. K. Rigby and D. Collins. 2004. Sponges of the Middle Cambrian Burgess Shale and Stephen Formations, British Columbia. Royal Ontario Museum Contributions in Science 1:1-155

Belongs to Hapalospongia according to J. K. Rigby and D. Collins 2004

Sister taxa: none

Type specimen: Its type locality is 14s. Trilobite Bed, Mount Stephen, which is in a Delamaran deep-water shale in the Burgess Shale Formation of Canada.

Ecology: stationary intermediate-level epifaunal suspension feeder

Distribution: found only at 14s. Trilobite Bed, Mount Stephen

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