"Thamnophilidae" . "Western Slaty-Antshrike" . "Thamnophilus atrinucha" . . . "Aves" . "Animalia" . "Chordata" . . . . . . . . "Thamnophilus atrinucha Salvin and Godman 1892" . . "Salvin and Godman 1892" . . . . . . "Passeriformes" . . "Thamnophilus" .