Austrocidaris spinulosa is a species of sea urchins of the family Cidaridae. Their armour is covered with spines. Austrocidaris spinulosa was first scientifically described in 1910 by Ole Mortensen.Kroh, A. (2010). Austrocidaris spinulosa (Ole Theodor Jensen Mortensen, 1974). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.
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