Fossilized sauropod eggs displayed at Indroda Dinosaur and Fossil Park
Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were being described in England during the 1820s, it was presumed that dinosaurs had laid eggs because they were reptiles.[1] In 1859, the first scientifically documented dinosaur egg fossils were discovered in France by Jean-Jacques Poech, although they were mistaken for giant bird eggs (birds were not yet recognized as dinosaurs at the time).
The first scientifically recognized non-avian dinosaur egg fossils were discovered in 1923 by an American Museum of Natural History crew in Mongolia. Dinosaur eggshell can be studied in thin section and viewed under a microscope. The interior of a dinosaur egg can be studied using CAT scans or by gradually dissolving away the shell with acid. Sometimes the egg preserves the remains of the developing embryo inside. The oldest known dinosaur eggs and embryos are from Massospondylus, which lived during the Early Jurassic, about 190 million years ago.[2][3]
^Cite error: The named reference enbd-first-1 was invoked but never defined (see the help page).
^Skinner, Justin."ROM Puts Oldest Dinosaur Eggs Ever Discovered on Display" Archived May 10, 2010, at the Wayback Machine. insidetoronto.com. May 6, 2010.
^Moskvitch, Katia. "Eggs with the Oldest Known Embryos of a Dinosaur Found". BBC News. November 12, 2010.
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