consider the huge winged sphinx's of assyria
the ones with the bearded human face

this picture of a sphinx dates from 2500bce
you'll notice it has the same face as the other two characters
the other two are the gods enki and enlil
enlil (the senior) sits on a box with the rudder.
So you have an image of an ocean going boat (when they didn't exist) and a sphinx with the face of its master Enlil.
When enlil fell from power in approx 3200bce he was no longer worhsipped a s a god. By the time babylon rose in 2000bce Enki became Ea and Enlil was forgotten.
However Enlil and Enki unlike the egyptian pantheon could never have been individuals
thats because the name enki and enlil are in fact titles
EN-KI = lord of the earth
EN-LIL = lord or the sky/air
So Enlil and Enki could have been titles from anytime before 3200bce
As usual of course when a god falls from grace his legacy is obliterated
his names is struck from carvings
his prayers are no longer said in temples
his face is cut from monuments