<p><strong>A nest full of fossilized <a href="http://animals.nationalgeographic.com/animals/prehistoric/">dinosaur</a> babies has been discovered in <a href="http://travel.nationalgeographic.com/travel/countries/mongolia-guide/">Mongolia</a>, and the find has paleontologists reexamining styles of parental care among the ancient reptiles. </strong></p><p>The approximately 75-million-year-old nest shows 15 juvenile members of <em>Protoceratops andrewsi</em>—a relative of <em><a href="http://animals.nationalgeographic.com/animals/prehistoric/triceratops-horridus/">Triceratops</a></em>—entombed in ancient sand dune deposits. The nest was recently discovered by Mongolian paleontologist Pagmin Narmandakh in the region's Djadokhta formation.</p><p>The 2.3-foot-wide (0.7-meter-wide) nest is breathtaking, according to <a href="http://www.uri.edu/cels/geo/GEO_Dfastovsky.html">David Fastovsky</a>, a co-author on a paper about the dinosaur nest published in the November edition of the <em><a href="http://www.journalofpaleontology.org/">Journal of Paleontology</a>.</em></p><p>Unlike other dinosaur nests found with fossil eggs, the babies in this nest appear to have been about a year old when they died.</p><p>(Related <a href="http://news.nationalgeographic.com/news/2008/11/081114-dinosaur-photo.html">picture: "Birdlike Dinosaur Eggs Found."</a>)</p><p>"We think there's good evidence for some sort of parental care, because these animals are growing together at the nest," said Fastovsky, a paleontologist at the University of Rhode Island. "They did not come fresh out of eggs two minutes ago." <em></em></p><p><em>—Anne Casselman</em></p>