Adult Maiasaura fed young higher-calorie food, study finds
Updated
Updated · Interesting Engineering · May 9
Adult Maiasaura fed young higher-calorie food, study finds
8 articles · Updated · Interesting Engineering · May 9
Ohio State researchers studied fossil teeth from 75- to 80-million-year-old Montana nesting sites and found juveniles ate lower-fiber, more nutritious food than adults.
Microwear patterns showed crushing wear in young teeth and shearing wear in adults, indicating different diets and suggesting adults provisioned nestlings, possibly with partially regurgitated food.
The findings push direct evidence of food provisioning back before birds, implying more complex dinosaur social behaviour and reinforcing Maiasaura's reputation as a highly attentive parent.
How can we be certain adult dinosaurs brought food, and their young didn't just find it themselves?
Did 'good mother' dinosaurs invent modern parental care millions of years before birds or mammals?
If dinosaurs had such complex parental care, what other advanced social behaviors might they have possessed?
New 2026 Fossil Evidence Shows Maiasaura Fed Young Nutritious Diets, Redefining Dinosaur Social Complexity
Overview
A groundbreaking 2026 study provided the earliest direct evidence that adult Maiasaura dinosaurs actively fed their young a diet very different from their own, offering higher-calorie and more nutritious food to support rapid growth. This discovery, based on detailed analysis of dietary differences between age groups, fundamentally reshaped our understanding of dinosaur social complexity and parental care. The findings challenged long-held assumptions about how much dinosaurs invested in their offspring, showing that Maiasaura parents used advanced strategies to help their young thrive. This research highlights a new level of social behavior in dinosaurs and deepens our knowledge of their evolutionary success.