Takakkawia
Takakkawia
Extinct genus of sponges
Takakkawia is a genus of sponge in the order Protomonaxonida and the family Takakkawiidae. It is known from the Middle Cambrian Burgess Shale that reached around 4 cm in height.[1] Its structure comprises four columns of multi-rayed, organic spicules (perhaps originally calcareous or siliceous) that align to form flanges.[2] The spicules form blade-like structures, ornamented with concentric rings.[2]
It was first described in 1920 by Charles Doolittle Walcott.[3] Takakkaw Falls which mark the start of the trail to Fossil Ridge.[4] 1377 specimens of Takakkawia are known from the Greater Phyllopod bed, where they comprise 2.62% of the community.[5]