Petromyzonti (lampreys) >
Petromyzontiformes (Lampreys) >
Mordaciidae (Southern topeyed lampreys)
Etymology: Mordacia: Etymology not explained, likely derived from mordax (L.), biting, referring to specific name of M. mordax. (See ETYFish); lapicida: lapis (L.), stone; -cida (L.), cut or kill, i.e., stonecutter, allusion not evident but possibly referring to its parasitic behavior. (See ETYFish).
More on author: Gray.