Reference

Jessica A. Goodheart, Sabrina Bleidißel, Dorothea Schillo, Ellen E. Strong, Daniel L. Ayres, Angelika Preisfeld, Allen G. Collins, Michael P. Cummings, Heike Wägele (2018): Comparative morphology and evolution of the cnidosac in Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia) – Frontiers in Zoology – 2018: 43-0001-43-0018.