The larva of Phoronopsis harmeri has a highly complex nervous system that includes an apical organ made up of four different types of nerve cells.
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The larva of Phoronopsis harmeri has a highly complex nervous system that includes an apical organ made up of four different types of nerve cells.
The terminal part of the juvenile's body is the ampulla, which can repeatedly expand and contract in diameter.
Sources
In NAKTASHIF worlds:Marine and coastal habitats
Approved version OWNER-REVIEW-20261108T214530043 · last approved 9 November 2026