Vauxia

Vauxia is an extinct genus of demosponge that had a distinctive branching mode of growth. Each branch consisted of a network of strands. "Vauxia" also had a skeleton of spongin (flexible organic material) common to modern day sponges. Much like "Choia" and other sponges, "Vauxia" fed by extracting nutrients from the water.
"Vauxia" is named after Mount Vaux, a mountain in Yoho National Park, British Columbia. It was first described in 1920 by Charles Doolittle Walcott.
"Vauxia" fossils are found in North America, specifically in the United States and Canada.