The development of sauropod skulls

[Halichoeres]

Based on a tiny (~24 cm) skull that appears to belong to a young Diploducus, this paper lays out the transformations that would have to happen to achieve the adult morphology. Like many large vertebrates, the infant skull is considerably foreshortened and undergoes allometry (some parts of the skull growing faster or for longer than other parts) to suit its eventual feeding ecology.

Illustrated here:


Paper (open access): https://www.nature.com/articles/s41598-018-32620-x

[Neosodon]

With a skull like that, Sauropods had to have been the cutest of baby animals.