Possible ancestor of sponges found

An exquisitely preserved 600-million-year-old fossil from China has cell types and a shape resembling sponges, thought to be among the first multicellular animals to evolve.

Sea sponges common ancestors of all animals

Sea sponges give clues to origin of neurons

Sponge - Wikipedia

Paleontology, Page 30 of 61

Earliest animals developed later than assumed

Hydrodynamics of sponge pumps and evolution of the sponge body plan

Did all animal life on Earth begin with a sea sponge?

Were the First Animals Sponge-Like?: Complexity in the animal tree of life - Science in the News

Porifera - Digital Atlas of Ancient Life

A love letter to sponges

What did the earliest animals look like?

Missing sponge gene is found at 'ghost' site, proving our oldest common ancestor was more complex than believed

Multimedia Gallery - Possible scenarios explaining how relatively complex comb jellies evolved before simpler sponges.

BIL 160 - Lecture 19