Comb jellies take root in a new tree of animal life
By Amy Maxmen, 15:59 PM April 15, 2008
Amorphous, gutless, and brainless, simple sponges were the first multicellular animals. That's what scientists have said for a century. Now a team of biologists suggests demoting sponges and placing comb jellies at the base of a new tree of animal life.
These gelatinous marine predators, including Aulacoctena acuminata pictured here, have more cell types and organs than the sedentary and filter-feeding sponges. Casey Dunn doesn't think the new placement is preposterous, though other biologist...
Source URL: https://www.sciencenews.org/article/comb-jellies-take-root-new-tree-animal-life