Some Dinosaur Eggs Took Six Months or More to Hatch Using embryonic tooth age, researchers have concluded that dinosaur eggs took twice as long to hatch as bird eggs. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Yellowstone-style ERUPTION could be sparked by magma chamber rising to surface beneath USFull Moon June 2018: Can you see the Strawberry Moon in Australia and New Zealand?Water usage in US at LOWEST level since 1970 as America battles climate changeThis Coral Must DieLet the Stream Run Through ItLOST IN TIME: 200-year-old photos recovered using MICRO X-RAY