Maiasaura dinosaur teeth carry a quiet clue: babies were not eating what adults ate. Tiny wear marks suggest young duck-bills got softer, richer food, adding fresh weight to the idea that some dinosaurs cared for offspring in surprisingly bird-like ways. Tiny scratches on fossilized dinosaur teeth are giving scientists a rare glimpse into family life from nearly 80 million years ago. A new study suggests that baby duck-billed dinosaurs may have eaten softer, richer and more nutritious foods than the adults that cared for them. The findings come from a close examination of Maiasaura peeblesorum, a plant-eating dinosaur that lived during the Late Cretaceous period. Paleontologists discovered that young Maiasaura had very different tooth wear patterns than adults. Those differences suggest the juveniles likely consumed low-fiber foods such as fruits, buds or other tender plant material, while adults mostly ate tougher vegetation. The study adds new evidence to a long-running idea that Maiasaura were unusually attentive parents. Researchers say the feeding behavior may resemble the way many modern birds feed their young today. “The urge …