Caenopedina diomedeae is a species of sea urchins of the Family Pedinidae. Their armour is covered with spines. Caenopedina diomedeae was first scientifically described in 1939 by Ole Theodor Jensen Mortensen.Kroh, A. (2010). Caenopedina diomedeae (Mortensen, 1939). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.
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