Dinosaurs may have lived in social herds as early as 193 million years ago.
Studies reveal that the prehistoric creatures lived in herds much earlier than previously thought. Fossils indicate a communal nesting ground and adults who foraged and took care of the young as a herd.
Since 2013, more than 100 dinosaur eggs (about the size of chicken eggs) and the partial skeletons of 80 juvenile and adult dinosaurs from a rich fossil bed in southern Patagonia. Surprisingly, the researchers observed that the fossils were grouped by age: Dinosaur eggs and hatchlings were found in one area, while skeletons of juveniles were grouped in a nearby location. Meanwhile, remains of adult dinosaurs were found alone or in pairs throughout the field site.
This “age segregation,” is a strong sign of a complex, herd-like social structure. The dinosaurs likely worked as a community, laying their eggs in a common nesting ground. Juveniles congregated in “schools,” while adults roamed and foraged for the herd.
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