Calliostoma zizyphinum. Site: SE of Killard Point
 Calliostoma zizyphinum. Event number: 19830504/03. Site: SE of Killard Point. 1983-05-04. Photograph © Christine Howson. (8/9) 
 Christine Howson (2026). Photograph of Calliostoma zizyphinum. Site: SE of Killard Point. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1620.jpg. Accessed on 2026-11-04