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Study Finds Titanosaurs Buried Eggs in Rotting Vegetation

9/9/2026

Summary

Story summary

University of Calgary paleontologist Darla Zelenitsky and colleagues determined titanosaurs buried their eggs in rotting vegetation in Argentina.
Electron-microscope analysis showed the titanosaur eggshells were highly porous, implying burial.
The fossils include volleyball-sized Fusioolithus eggs linked to 25-metre-long Nullotitan glaciaris titanosaurs.
Researchers suggested broader titanosaur nesting studies could explain their global Late Cretaceous distribution.

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Story summary

University of Calgary paleontologist Darla Zelenitsky and colleagues determined titanosaurs buried their eggs in rotting vegetation in Argentina.
Electron-microscope analysis showed the titanosaur eggshells were highly porous, implying burial.
The fossils include volleyball-sized Fusioolithus eggs linked to 25-metre-long Nullotitan glaciaris titanosaurs.
Researchers suggested broader titanosaur nesting studies could explain their global Late Cretaceous distribution.