Anubis and the various point connections to Giza...to the underground
aspect of Giza.....and Underworld.....various rites in connection
to the weighing of the heart...death journey/resurrection.
That Dumuzi is mirror story to Osiris...the above author opine
Our/both view that pre dynastic Egypt was influenced by contact from
Mesopotamia/Levant in Naqada periods....
prior to Naqada ??....yet certainly during Naqada II.
Osiris replaces Anubis ....5th dynasty?...earlier ?
The Sphinx could be Anubis....
Wether this is in itself a remodeling of something earlier.
Even if the Sphinx head was a stump....they may have built a mask head
of Anubis to go over/ anchored by the stump...it's possible.
unless the remodeled head was a limestone head of Anubis.
The stump....later remodeled to Pharaonic.
The great age of the Sphinx may support several manifestations.