The fascia separating rectum form coccyx is called

The lower third of the rectum is separated by a fascial condensation - Denonvilliers' fascia - from the prostate/vagina in front, and behind by another fascial layer - Waldeyer's fascia - from the coccyx and lower two sacral veebrae (Table 68.1). These fascial layers are surgically impoant as they are a barrier to malignant invasion Ref: Bailey & Love&;s Sho Practice of Surgery,E25,Page-1219