Sauropod Dinosaur Babies - American Museum of Natural History
About 80 million years ago, herds of hundreds of female titanosaurs came here to dig out shallow nests, where they laid between 15 and 40 eggs. Some adults may have guarded the nesting ground to keep predators away, but young dinosaurs almost never reached adulthood. Yet because the females laid so many eggs, enough hatchlings survived to ...
Dinosaur egg - Wikipedia
Dinosaur eggs vary greatly in size and shape, but even the largest dinosaur eggs (Megaloolithus) are smaller than the largest known bird eggs, which were laid by the extinct elephant bird. Dinosaur eggs range in shape from spherical to highly elongated (some specimens three times longer than they are wide).
Sauropods: Current Biology - Cell Press
2023年1月23日 · For their body size, sauropod eggs are extremely small, at most 5 liters in volume. Depending on their size, sauropod females must have laid dozens to hundreds of eggs per year, spread over more than one clutch.
Newly discovered rare dinosaur embryos show sauropods had …
2020年8月27日 · An incredibly rare dinosaur embryo discovered perfectly preserved inside its egg has shown scientists new details of the development and appearance of sauropods which lived 80 million years ago....
Fossil Focus: Eggs, nests and dinosaur reproduction
Typically, theropods produced ellipsoidal (oval) eggs with a smooth surface or faint striations or ridges following the long axis of the egg. Herbivorous dinosaurs — sauropods and ornithopods — laid eggs more spherical in shape, with surface ornamentation consisting of dense and compacted nodes or a network of nodes and irregular ridges ...
Sauropod dinosaur embryos from the Late Cretaceous of …
1998年11月19日 · Here we describe the first known unequivocal embryonic remains of sauropod dinosaurs—the only known non-avian dinosaur embryos from Gondwana—from a nesting ground in the Upper Cretaceous stage of...
Sauropod Eggs and Nests - Prehistoric Earth - Fossil Hunters
2023年11月7日 · The large, round eggs so often attributed to sauropod dinosaurs have been found in many places around the world, including Spain, France, India, and Argentina. Clutches of these eggs generally consist of about 12 closely packed eggs laid in a single layer, although cases with as few as 3 and as many as 20 eggs also have been found.
Why Diplodocus did not put all her eggs in one basket
2014年6月12日 · Scientists have discovered that both individual egg size and clutch size for the sauropods -- which includes Diplodocus -- were a lot smaller than might be expected for such enormous creatures. A...
Sauropod Egg (cast) & shell fragments | Kirkby Teaching Resources
Sauropod eggs were the first known dinosaur eggs, originally found by Jean-Jacque Pouech in the Provence region of France in 1859 but only identified as being from dinosaurs by Paul Gervais in 1877. Still, that was nearly a half century before Roy Chapman Andrews’ 1923 Mongolian expedition famously brought dinosaur eggs to the public’s ...
Eggs, Nests, and Reproductive Biology of Sauropodomorph
In this chapter, we present a summary of all sauropodomorph dinosaur egg evidence found in South America, and we review and discuss the classification, nesting environments, and reproductive biology of this group of extinct dinosaurs.