No dinosaur eggs going on. That’s bizarre.
I’m quite positive that God didn’t send any eggs to hop on the boat.
Considering the fact that reptiles don’t stop growing, I think the most likely case is the young ones were brought on the ark.
We also needn’t worry about whether or not Noah “took” this or that. All of the animals were sent to Noah by God.
“Of the birds according to their kinds, and of the animals according to their kinds, of every creeping thing of the ground, according to its kind, two of every sort shall come in to you to keep them alive.”
Genesis 6:20
Also there would have been less animals that needed to get on the boat, because there was more information in each animal’s gene code, since fewer mutations had occurred.
i.e. Just 1 pair of dogs, versus all the different breeds of dogs.
Same with where all the races came from.
That would have helped a ton with space issues overall.