I am not familiar with that idea, so you will need to explain where you get it from in order for me to comment on it.
Not knowing how well you know the bible or how familiar you are with the bible.
In the bible it speaks of two types of man, the one being man of flesh and blood of the earth, which is called in the bible
( Terrestrial ) man of the earth.
The other man being called the
( Celestial) man of heavenly, which is not of flesh and blood of the earth.
That we find in the book of Genesis 1:26--"And God said, Let us make man in our image, after our likeness"
These being the man of the heavenly,
Also called the sons of God.
In the book of Job 1:6--"Now there was a day when the sons of God came to present themselves before the LORD"
Many people will say, that angels do not have power to create, But seeing they are without knowledge, Angels can create, but Angels do not have the power to give the breath of life, Only God has the power of breath of life.
For God breathed into Adams nostrils the breath of life, and man became a living soul.
Angels do not have the breath of life, only God has that power of the breath of life.
In the book of Daniel we can find the Angel Gabriel, Daniel calling a man.
Daniel 9:21--"Yet while I speaking in prayer, even the man Gabriel" But yet Gabriel is angel. But yet a man.
That even in the book of Judges, we find an angel of the Lord, appeared unto Samson mother, before Samson was born.
Judges 13:3--"And the angel of the Lord appeared unto the woman, and said unto her, Behold now, you are barren, and bearest not, but you shalt conceive, and bear a son"
And then in verse 6 of Judges we find Samson mother saying to her husband,
( Then the woman came and told her husband, saying, A man of God came unto me)
So what we have is, two types of man being spoken of, The one man being the
( Celestial) man of the heavenly and the other man being the ( Terrestrial) man of the earth, flesh and blood.
The ( Celestial) man, this being of the heavenly, angels, also called the sons of God. Were with God back during the first earth age, the first earth age, is where the dinosaurs bones came from.
We were there with God, not as flesh and blood, but the ( Celestial) man of the heavenly.
In the book of Jeremiah 1:5--"Before I formed you in the belly, I knew you, and before you came forth out of the womb"
So this means, before anyone came forth from the womb of their mothers, we were with God, as the ( Celestial) man of the heavenly. The sons of God.