Capsospongia

taxobox
fossil_range=Middle Cambrian, fossil_range|520
regnum=Animalia
phylum=Porifera
classis=Demospongae
familia=Anthaspidellidae
genus="Capsospongia"
species="C. undulata"
species_authority=Walcott 1920

"Capsospongia" is a middle Cambrian sponge genus known from 2 specimens in the Burgess shale.fotbs It has a narrow base, and consists of bulging rings which get wider further up the sponge, resulting in a conical shape. Its open top was presumbaly used an to expel water that had passed through the sponge cells and been filtered for nutrients.

Like most sponges, "Cpsospoingia" had a spicular skeleton; long spicules parallel to the growth direction formed columns which were connected by shorter lateral spicules.

References