it seems to be a one in a billion type preservation. what seems to have happened, this egg was probably in a nest. its parents probably would have been protecting those eggs. we know from other fossils that these types of dinosaurs were very caring parents. and it looks like there was a mudslide that just wiped this egg away and it buried this egg within a couple of days before it would have hatched and it very sadly for this sdinosaur, encased the egg in stone. but for us it was preserved as a fossil and 70 million years later, here we are, we get to study it. i just wish i had you as a science teacher. honest to god, thank you so much for being with us and explaining this and sharing your enthusiasm with us. thank you. merry christmas, happy holidays, everybody. you too. here s what else to watch today. just three words tell you everything you need to know.