The context of this fossil suggests that social interactions, possibly including cooperative defense strategies, were more complex than previously thought. Display Structures and Communication Many dinosaurs possessed physical structures that may have been used for social displays and communication. Ceratopsians, such as Triceratops, had elaborate frills and horns, and hadrosaurids had crests that could have been used for visual and auditory signaling. The diversity and complexity of these structures suggest they were used for more than just defense; they likely played roles in social interactions, such as attracting mates, establishing dominance, or coordinating group movements. Hadrosaurids, often referred to as "duck-billed dinosaurs," provide particularly compelling evidence of social behavior related to communication. The crests of some hadrosaurids, such as Parasaurolophus, contain complex nasal passages that could have been used to produce sounds. Studies suggest that these crests could function as resonating chambers, allowing the dinosaurs to make distinctive calls that could be used for communication within their groups. This form of communication is essential for maintaining social cohesion and coordinating group activities. Additionally, the discovery of color patterns in some …show more content…
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