Brainless sponges have cells that might be the precursors of neurons

Sponges are arguably the simplest animals and they lack a nervous system, but peculiar cells in their digestive chambers may be evolutionary precursors of neurons

Brainless sponges have cells that might be the precursors of neurons
Sponges are arguably the simplest animals and they lack a nervous system, but peculiar cells in their digestive chambers may be evolutionary precursors of neurons