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Dinosaur eggs whose embryos died were likely victims of similar causes to those that kill embryos in modern reptile and bird eggs. Typical causes of death include congenital problems, diseases, suffocation from being buried too deep, inimical temperatures, or too much or too little water.
Model of a dinosaur egg. Dinosaur reproduction shows correlation with archosaur physiology, with newborns hatching from eggs that were laid in nests. [1] [2] Dinosaurs did not nurture their offspring as mammals typically do, and because dinosaurs did not nurse, it is likely that most dinosaurs were capable of surviving on their own after hatching. [3]
Dinosaur eggs may have been the victim of the same causes of mortality suffered by modern bird and reptile eggs, like asphyxiation due to overly deep burial, congenital health problems, dehydration, disease, drowning, and inimical temperatures. After hatching or death the processes of decomposition and/or preservation begin.
Six small non-avian dinosaur eggs, no bigger than grapes, were discovered during a field study in Ganzhou, China, in 2021. These eggs now mark the smallest-ever found in the world.
Paleontologists found 100 eggs and 80 skeletons from a dinosaur called Mussaurus at a site in Patagonia, suggesting the animals lived in groups.
A pair of Macroolithus eggs. Macroolithus eggs are characterized by large size, measuring 16 to 21 cm (6.3 to 8.3 in) long, and by their particularly coarse ornamentation. [1] [2] Their microstructure is not well defined in the literature, [1] but generally follows the typical elongatoolithid pattern: [2] The eggshell is arranged into two structural layers (the mammillary layer and the ...
The study, published in Proceedings of the National Academy of Sciences, finds that some dinosaur eggs may have taken six months or more to hatch–much longer than the eggs of dinosaurs' close ...
No dinosaur egg has been found that is larger than a basketball and embryos of large dinosaurs have been found in relatively small eggs, e.g. Maiasaura. [53] Like mammals, dinosaurs stopped growing when they reached the typical adult size of their species, while mature reptiles continued to grow slowly if they had enough food.