Description of a new family, new genus, and two new species of deep-sea Forcipulatacea (Asteroidea), including the first known sea star from hydrothermal vent habitats

作者：Mah Christopher^*; Linse Katrin; Copley Jon; Marsh Leigh; Rogers Alex; Clague David; Foltz David

来源：Zoological Journal of the Linnean Society, 2015, 174(1): 93-113.

DOI：10.1111/zoj.12229

• Antarctica
• deep sea
• forcipulatacea
• hydrothermal vent
• North Pacific
• pedicellariae

Based on a phylogenetic analysis of undescribed taxa within the Forcipulatacea, a new family of deep-sea forcipulatacean starfishes, Paulasteriidaefam.nov., is described from deep-sea settings. Paulasterias tylerigen.etsp.nov. was observed at recently documented hydrothermal vents on the East Scotia Ridge, Southern Ocean. A second species, Paulasterias mcclainigen.etsp.nov. was observed in deep-sea settings in the North Pacific, more distant from hydrothermal vents. Both species are multi-armed (with between six and eight arms), with a fleshy body wall, and a poorly developed or absent adoral carina. Here, we include discussions of pedicellariae morphology, feeding biology, and classification.

• 出版日期2015-5