Shelf, slope and abyssal depths: 400-2946m (off New England, Atlantic Ocean); 140-438 m (off Brazil, Atlantic ... [details]
Emended diagnosis by Ranauro et al. (2020: 4): "Body long and slender with numerous segments, easily broken. ... [details]
From Ranauro et al. (2020: 11): "Prostomium with median antenna, nuchal organs as curved slits on posterior margin, ... [details]
From Ranauro et al. (2020: 4): "Prostomium without median antenna, nuchal organs as curved slits on posterior ... [details]
Southern Atlantic Ocean: SE Brazil (off Espírito Santo state). [details]
Atlantic Ocean: all along the U.S. Atlantic slope from the Canadian boundary to off the Carolinas; off Louisiana, ... [details]
"The specific name refers to the presence of a median antenna, which is herein described for the first time for ... [details]
In muddy-sand sediments with few scattered boulders, in shelf depths. [details]
Muddy sediments with small amounts of sand, in shelf, slope and abyssal depths. [details]
Off State of Espírito Santo, Brazil, SW Atlantic Ocean (-19.7206°, -39.5597°). [details]