The documentary Walking with Dinosaurs portrayed a mother Diplodocus using an ovipositor to lay eggs, but it was pure speculation on the part of the documentary author. For Diplodocus and other sauropods, the size of clutches and individual eggs were surprisingly small for such large animals.

What size egg is a Diplodocus?

Infant Diplodocus hatched out of eggs roughly the size of a large grapefruit, and if they were lucky, the dinosaurs grew to be more than 80 feet long as adults. And the little sauropods were not just small copies of adults.

Did T Rex eat Diplodocus?

The same is true for Apatosaurus, Diplodocus, Barosaurus, Brachiosaurus and Camarasaurus—all of these 150-million-year-old icons flourished during a time when tyrannosaurs were tiny, fuzzy creatures that could have tackled only much smaller fare. ...