Noun
English Wikipedia has an article on:caudofemoralisWikipedia
caudofemoralis
A muscle present in the pelvic limb of most animals that possess a tail
The caudofemoralis muscle would have been a key muscle in femoral retraction; pulling back the leg at the femur. Source: Internet
Tyrannosaurus also had the largest absolute and relative caudofemoralis muscle mass out of the three extinct organisms in the study. Source: Internet