Eggs of Non-Avian Dinosaurs Took 3-6 Months to Hatch –

Non-avian dinosaur eggs took a long time to hatch — between 3 and 6 months, according to new research on the teeth of fossilized dinosaur embryos.

Herds of female titanosaurs gathered at traditional nesting grounds 80 million years ago in what is now Patagonia, Argentina. Image credit: Luis Rey / Yale University.

“Some of the greatest riddles about dinosaurs pertain to their embryology — virtually nothing is known,” said Prof. Gregory Erickson, a researcher at Florida State University and lead author on the study, published in the Proceedings of the National Academy of Sciences.

“Did their eggs incubate slowly like their reptilian cousins — crocodilians and lizards? Or rapidly like living dinosaurs — the birds?”

“We know very little about dinosaur embryology, yet it relates to so many aspects of development, life history, and evolution,” said Dr. Mark Norell, a…

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