I can picture Noah on deck; “I think we’re going to need a bigger Ark.”
FWIW, the largest dinosaur eggs are around 19 inches long, thus the dino hatchlings would be around the size of a full grown house cat.
As such, Noah would not have brought a full size 80 foot 40 ton Brachiosaurus on board, but would have opted for a <5 foot pair of specimens that would serve the re-population purpose just fine and have more time in their reproductive years to be fruitful.