Zemann B, Le MV, Sherlock RE, Baum D, Katija K, Stach T.

J Morphol. 2023 Jul;284(7):e21598. doi:10.1002/jmor.21598

Evolutionary traces of miniaturization in a giant-Comparative anatomy of brain and brain nerves in Bathochordaeus stygius (Tunicata, Appendicularia).

102 cells in the brain, a number comparable to one in O. doica.