Fossilised Dinosaur eggs

Facts for Prelims

Fossilised Dinosaur eggs

News: Recently, a group of Indian researchers found rare cases of fossilised dinosaur eggs - an egg within an egg - among 256 newly discovered eggs from the Narmada Valley. 

Key Findings:
• The discovery suggests that Titanosaurs displayed a notable reproductive trait unique to modern-day birds.
• Fossilised eggs provide clues on reproductive biology, nesting behaviour and parental care. The egg has two yolks; this feature can be seen in birds, suggesting they share similar reproductive traits. 
• This region falls between the easternmost Lametta exposures at Jabalpur in the upper Narmada Valley (central India) and Balasinor in the west in the lower Narmada Valley (western central India), according to the document.
• Lametta exposure is a sedimentary rock formation known for its dinosaur fossils. These sedimentary rocks are mostly exposed along the Narmada Valley.
• The fossil records here are largely concealed by Deccan volcanic flows, which prevents their removal by erosion.