70 million year old fossilized dinosaur egg nest with embryo inside in Argentina

Argentine scientists have discovered fossilized dinosaur eggs with embryos inside, dating back about 70 million years in the southern province of Neuquén.

The Vietnam News Agency correspondent in Buenos Aires quoted the director in charge of cultural heritage for the province of Neuquén, Claudia Della Negra, as saying on April 13 that the graves mentioned above are similar to the fossil eggs previously found in the province. another part of this province. Archaeologists are currently studying the embryo, teeth, and skin of this fossilized dinosaur egg.

The government of the province of Neuquén plans to build a paleontological park to preserve the archaeological heritage found in the area. This activity has had the support of the National Geographic Institute, the National Scientific and Technical Research Council of Argentina and the Spanish province of Zaragoza.

Nava said that dinosaur eggs are typically 10 to 13 centimeters long and 5 to 8 centimeters wide, while ancient crocodile eggs are no more than two inches. Fossil crocodile egg shells are usually hollow or smooth, while dinosaur eggs have a shell with a wavy pattern that looks like winding worms.

Dinosaur eggs unearthed in the city of Presidente Prudente, in the state of São Paulo, preserved in a layer of soil that gradually transforms into sandstone over time. The material acts as a natural defense, forming several layers of sand over millions of years, helping to preserve the nests until paleontologists dug them out of the ground last year. However, it wasn’t until December 2021 that they determined that the eggs belonged to a dinosaur.

Previously, researchers discovered a dinosaur embryo in excellent condition in China. The embryo, named “Baby Yingliang,” is nestled inside a fossil egg in the rock layer of the Hekou Formation at the Shahe Industrial Park in Ganzhou city, Jiangxi province. This specimen is one of the most intact dinosaur embryos known, closer to a bird embryo than a dinosaur.

In particular, Baby Yingliang is about to hatch, her head is tucked under her body, her back is bent, and her feet are placed at the sides. A team of paleontologists led by the University of Birmingham say Baby Yingliang belongs to a species of beaked but toothless theropods called “oviraptorosaurs.” Their embryos are 27 cm long from head to tail and are coiled inside a 17 cm long egg.

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