53990 Scymnodalatias garricki Kukuev & Konovalenko, 1988 Somniosidae Sleeper sharks Squaliformes Elasmobranchii Azores dogfish Eastern Central Atlantic: known only from the holotype taken from one of the seamounts of the North Atlantic Ridge located north of the Azores. FB 2742516 Scymnodalatias garricki 300 m