Atlantic abyssal plains of Porcupine, Tagus, Madeira, Cape Verde, Guinea and Angola. [details]
The specific epithet magnuncus derives from the large conspicuous hooks on the notopodia (Latin magnus, 'large', ... [details]
Abyssal depths, probably in soft sediments. [details]
Northeast Atlantic Ocean, Porcupine Abyssal Plain (48º51.5'N, 16º29.6'W), 4844 m, sediment layer 1-3 cm. [details]