Dr. McCLELLAND - ... I noted that the right posterior portion of the skull had been extremely blasted. It had been shattered,...
Great, he confirmed that it was posterior - behind the ears. That settles it.
Of course other doctors confirmed that the big hole was in the back of the head. Some mention that the head was turned, to get a better look.
Others had a good look at the hole in the back of the head before during and after that, and even felt it (here we go again):
SSA Clint Hill:
The right rear portion of his head was missing...There was so much blood you could not tell if there had been any other wound or not, except for
the one large gaping wound in the right rear portion of the head.
FBI SA James Sibert: it was a good size,
in the back part of the head there. ...
...but my recollection of the way the head looked is nothing that would appear as this photograph shows. This photograph is too neat.
Right back here is where you would have had that massive wound, right in here, and you see that's neat. My thought was that that was probably taken after reconstruction was done... there was a big cavity there.
Nurse Diana Bowron: ).
I saw that there was a massive amount of blood on the back seat and in order to find the cause I lifted his head and my fingers went into a large wound in the back of his head; I turned his head and seeing the size of the wound realized that I could not stop the bleeding. I turned his head back and saw an entry wound in the front of the throat, I could feel no pulse at the jugular and having seen the extent of the injury to the back of the head I assumed that he was dead.
There was a gaping wound in the back of his head. It was gone. Gone. There was nothing there. Just a big gaping hole. There might have been little clumps of scalp, but most of the bone over the hole, there was no bone there. There was no damage to the front of his face,
only wound in the back of his head and the entry wound in his throat. The wound was so large I could almost put my whole fist into it....
Dr Perry turned the President's head slightly to the President's anatomical left so that she could see a right posterior head wound, which she described as occipitalRICHARD BROOKS DULANEY, MD: Dulaney told journalist Ben Bradlee, Jr.,
"...Somebody lifted up his head and showed me the back of his head. We couldn't see much until they picked up his head. I was standing beside him. The wound was on the back of his head. On the back side" They lifted up the head and "the whole back-side was gone." (Groden R., Livingston, H., High Treason. 1989 New York, Berkley Books, p.460.)
FOUAD BASHOUR, MD: an associate professor of medicine, cardiology, at Parkland at the time of the assassination. Groden and Livingstone reported, "He was most insistent that the official picture was not representative of the wounds, and he continually laid his hand both on
the back of Livingstone's head and his own to show where the large hole was.
'Why do they cover it up?' he repeated numerous times. 'This is not the way it was!' he kept repeating, shaking his head no." (Groden & Livingston, H., High Treason. 1989 New York, Berkley Books, p.45)
Nurse Doris Nelson:
There wasn’t even hair back there. It was blown away. All that area was blown out(when shown the rear of head autopsy photo)Nurse Pat Hutton: A doctor asked me to place a pressure dressing on the head wound. This was of no use, however, because of
the massive opening on the back of the head.
Nurse Margaret Hinchcliff:
the President had a gaping wound in the back of his head and an entrance wound in his throat.
Aubrey Rike(Oneal Funeral Home, Dallas):
You could feel the sharp edges of the bone at the edge of the hole in the back of the headBethesda photographer Floyd Riebe: a big gaping hole in the back of the head
Mortician Thomas Robinson: about the size of a small orange…
Circular…ragged… directly behind the back of his head…they brought a piece of heavy duty rubber, again to fill this area in the back of the head….
More here:
http://www.assassinationweb.com/ag6.htm