K. Preuß. Akad. d. Wissensch. Phys.-math. Abh. 1909. 
Processus retromastoideus sinister Torus oceip. 
Proc. retromastoideus dexter 
Proc. mastoideus sinister 
Proc. mastoideus dexter 
Fig. 5. Papuaschädel. Processus retromastoideus. 
Protuberantia oceip. ext. 
Processus retromastoideus 
Processus retromastoideus dexter 
sinister 
Processus mastoideus 
sinister Processus mastoideus 
dexter 
Fig. 6. Papuaschädel. Processus retromastoideus. 
Waldeyer: Der Processus retromastoideus. Taf. II. 
