Dinosaur era’s largest egg found in Antarctica

A group of Chilean researchers discovered in Antarctica the largest egg of the dinosaur age, almost 30 centimeters and 6.5 kilos, which would correspond to a marine reptile that lived more than 66 million years ago. The finding also makes history as it is the second largest egg on record. “With this data we can understand a little more about the way of reproduction of the great marine reptiles of the Mesozoic era or of the dinosaurs,” said David Rubilar, paleontologist at the National Museum of Natural History and one of the scientists who found the organic remains.
The fossil, with an oval rocky appearance, like a large deflated ball, was located during a 2011 expedition by researchers from the University of Chile and the National Museum of Natural History to Seymour Island, northeast of the Antarctic Peninsula.

After more than eight years of investigation together with American experts from the University of Texas at Austin, this Wednesday the prestigious magazine Nature published the conclusion. The academic of the Faculty of Sciences of the University of Chile Alexander Vargas explained that the egg had a “very thin” soft shell and that the mother, a marine reptile that was probably a mosasaur, measured “between 7 and 17 meters”. The discovery marks a turning point both for its enormous size and for its rarity, since it is “unprecedented” that a soft-shell egg is preserved, which according to the expert, “tends to decompose easily and not be preserved as fossils” .

The exploration that made the discovery possible in 2011 was part of Chile’s largest paleontological campaign on the white continent, as part of the annual expedition of the Chilean Antarctic Institute (INACH). Geologists focused primarily on Seymour Island, folded with “wonderful and abundant fossils” and one of the few places where the end of the dinosaur age can be distinguished from the beginning of the age of mammals, 66 million years ago. years.