Computed tomography scan of Hippocampus nalu, SAMC-F041933, holotype, female, 18.9 mm SL, 2 Mile Reef, Sodwana Bay, South Africa A lateral view of head and trunk area B anterolateral view of first and second superior trunk ridge spines (STrR1-2) C close-up lateral view of second superior trunk ridge cuspidate spines (STrR2). Abbreviations: ES, double eye spines; SOC, supraoccipital; CO, coronet; SC, supracleithrum; STrR1, first superior trunk ridge spine; STrR2, second superior trunk ridge spines; STrR5, fifth superior trunk ridge spine; STrR12, twelfth superior trunk ridge spine.