Palaeontologists have identified the oldest known dinosaur embryos, belonging to a species that lived some 190 million years ago.
The eggs of Massospondylus, containing well-perserved embryos, were unearthed in South Africa back in 1976.
The creature appears to be an ancestor of the family that includes the long-necked dino once known as Brontosaurus. ...
Interestingly, the report says, the embryos looked quite different compared to the adult animals.
Once hatched, the babies would have had rather long front legs, meaning that they would have been walking on all fours rather than on two legs like the adults.
The embryos' heads were also disproportionally big, but it is believed the adult Massospondylus, which were about five metres in length, had relatively tiny heads and long necks.
The little ones' anatomy would have changed with age.
via BBC News - Eggs with the oldest known embryos of a dinosaur found.