A treasure trove of fossil nests uncovered in India hints at an array of as-yet-undiscovered dinosaurs, and gives clues to how these animals reproduced
at the University of Delhi and his colleagues discovered the nests during fieldwork between 2017 and 2020. The team proposes that there are at least six egg shapes – technically called oospecies – found in the formation. If each egg shape was laid by a different species, it would double the known number of species in the formation.The nests also underscore what palaeontologists are coming to understand about how some of the largest dinosaurs reproduced.
Finding bones and eggs together will provide firmer evidence of how many dinosaur species were around, says Zelenitsky. “That said, there is clearly something interesting about the Lameta Formation to consistently produce a number of different titanosaur egg types,” she says.Back in the heyday of the dinosaurs, this part of western India was a wet and marshy lowland dotted with small lakes.
These moist sediments also help explain why so many dinosaur nests came to be preserved in western India. When streams, marshes and ponds rose, nearby nests were inundated and buried.
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