Fossils

A tray filled with elongated eggs that are white, cream and brown in color

Before the Chicken, There Was the (Dinosaur) Egg

While we don’t know a whole lot about dinosaur reproduction, we have much more information about what happens after mating. That’s because the fossil record of eggs and nests is quite good. Like living reptiles, dinosaurs buried their eggs, which appear to have had long incubation periods—up to half a year. 

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