Crumillospongia

Crumillospongia is a genus of middle Cambrian sponges known from the Burgess Shale and other localities from the Lower and Middle Cambrian.^[2][3] Its name is derived from the Latin crumilla ("money purse") and spongia ("sponge"), a reflection of its similarity to a small leathery money purse. That is, it has a saclike shape, and its wall has holes of two sizes, with a well-developed internal canal system. ^[2] 49 specimens of Crumillospongia are known from the Greater Phyllopod bed, where they comprise 0.1% of the community.^[4]

Crumillospongia Temporal range: Upper Lower Cambrian–Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of Crumillospongia frondosa
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Demospongiae
Order:	†Protomonaxonida
Family:	†Hazeliidae
Genus:	†Crumillospongia Rigby, 1986[1]
Species
C. frondosa (Walcott, 1919) Rigby, 1986 C. biporosa Rigby, 1986