Syncarpa composita (Tokioka, 1951), ICHUM 5824, cross section of a tadpole larva, showing photolith.

 
 
  Part of: Hasegawa N, Kajihara H (2019) A redescription of Syncarpa composita (Ascidiacea, Stolidobranchia) with an inference of its phylogenetic position within Styelidae. ZooKeys 857: 1-15. https://doi.org/10.3897/zookeys.857.32654