The discovery of a tightly packed nesting ground from the Cretaceous period in India suggests that titanosaurs laid eggs and left their offspring behind.
About 70 million years ago, titanosaurs the length of school buses stomped through what is now west central India to lay their eggs by a riverbank. While these long-necked sauropods and the river are long gone, many of their nests remain intact, full of fossilized dinosaur eggs that reveal clues about how these massive herbivores nested and laid their eggs, and whether they took care of their hatchlings.
"The sheer number of clutches and eggs means that there is a huge dataset to unpack in the coming years," Michael D. D'Emic , an associate professor of biology at Adelphi University who studies dinosaur evolution but was not involved in the present study, told Live Science in an email. However, he noted that it's unclear whether these eggs were laid at the same time or over many years, so it's unknown how tightly packed the"active" nests were.
However, not everything the titanosaurs did was birdlike. The site hinted that titanosaurs laid their eggs as a clutch and partially buried them, like modern crocodiles do — an act that helps incubate the eggs through solar radiation and geothermal heat. Crocodiles are archosaurs, a group that includes dinosaurs, pterosaurs, crocodilians and birds.
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