Polymastia, Polymastiida, Polymastiidae. . Site: Ruecallan Archway (North Wall), Rathlin Island
 Polymastia, Polymastiida, Polymastiidae. Event number: 20241014/01. Site: Ruecallan Archway (North Wall), Rathlin Island. 2024-10-14. Photograph © Libby Keatley. (23/68) 
 Libby Keatley (2026). Photograph of Polymastia, Polymastiida, Polymastiidae. . Site: Ruecallan Archway (North Wall), Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=pa140018.jpg. Accessed on 2026-11-03