'This small triangular bone consists of 4 rudimentary vertebrae'
the coccyx
YX?  THAT'S FOR ME TO KNOW: This small triangular bone consists of 4 rudimentary vertebrae
This small triangular bone consists of 4 rudimentary vertebrae
This small triangular bone consists of 4 rudimentary vertebrae
"YX"?  THAT'S FOR ME TO KNOW
the coccyx
"YX"?  THAT'S FOR ME TO KNOW