Vauxia is an extinct genus of demosponge that had a distinctive branching mode of growth.

Vauxia also had a skeleton of spongin (flexible organic material) common to modern day sponges.

Herpetogaster, an extinct genus of Early Cambrian animals, attached to branches of Vauxia through a flexible, extensible stolon.

[2] Vauxia is named after Mount Vaux, a mountain in Yoho National Park, British Columbia.

[3] Vauxia fossils are found in North America, specifically in the United States and Canada.