Juvenile duck-billed dinosaurs likely hung out in cliques, away from their original herd, an analysis of two bonebeds reveals.
Teenage duck-billed dinosaurs broke off from the herd — essentially saying"See you later!" to older and younger paleo-pals — and traveled together in cliques, new research suggests.
"We now have a better understanding of the herding behavior and life history of this dinosaur," Joubarne said. The research, which was presented Nov. 4 at the Society of Vertebrate Paleontology's annual conference in Toronto, is not yet published in a peer-reviewed journal.Although hadrosaurs are among the most common dinosaurs in the fossil record and were"like the cows or deer of the Late Cretaceous," little is known about their behavior, Joubarne said.
The hadrosaurs in the two bonebeds were about half that size or smaller. The smallest individuals lacked a crest, and the largest ones were just starting to grow one, indicating that"these dinosaurs were not mature, and they still had a long way to go before they reached adulthood," Joubarne said. The Alberta specimens were all around the same age, while the hadrosaurs in the Montana bed varied in size and were likely different ages, he said.
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