Mar 23, 2025 · Pinpointing the exact size of a Tyrannosaurus rex egg remains one of paleontology’s enduring mysteries, largely because no fossilized T. rex egg has been definitively identified. However, recent discoveries of tyrannosaur embryos are providing some clues.

Apr 15, 2014 · What did T. rex eggs and babies look like? T. rex juveniles are extremely rare in the fossil record. Some scientists suggest this is because many juveniles survived to adulthood, but it could...

Mar 16, 2016 · Researchers discover medullary bone in leg bone of T rex fossil; Medullary bone only present just before and during egg-laying; Indicates dinosaur was pregnant female aged between 16 and 20

“But despite this wealth of data for tyrannosaur biology, the smallest identifiable individuals are aged three to four years old, much larger than when they would have hatched. No tyrannosaur eggs or embryos have been found even after 150 years of searching—until now.”

Jan 25, 2021 · Producing 3-D scans of the delicate fragments revealed that they belonged to baby tyrannosaurs—cousins of T. rex - which, based on the size of the fossils, were around three feet long when they...

Mar 7, 2024 · The eggs of the T. Rex were huge by comparison. A 2020 article from National Geographic reports that the average size of a T. Rex egg was 17 inches long. That’s nearly half the body length of a fully mature T. Rex !

Mar 19, 2025 · The short answer is yes, all available evidence strongly suggests that Tyrannosaurus Rex, like all other known dinosaurs, reproduced by laying eggs. This isn’t just speculation; it’s based on a convergence of paleontological findings, comparative anatomy, and the understanding of sauropsid (reptile) biology.

Apr 9, 2025 · While no egg has been definitively confirmed to belong to a T. rex with a hatchling inside to prove it, there have been finds that suggest the possibility. Large, elongated eggs found in formations dating to the Late Cretaceous period (the time of T. rex ) are potential candidates.

Fossil evidence suggests that T-Rex, like all theropod dinosaurs, laid eggs. The discovery of T-Rex eggs in 1993 in the Hell Creek Formation in Montana was a significant breakthrough in understanding the reproductive biology of this iconic dinosaur.

Oct 19, 2020 · From the size of the embryos, researchers think tyrannosaurs were curled up in eggs that measure about 17 inches long. The new fossils give researchers a few clues to go searching for more...