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Re: Interspecific combat in Ceratopsians

 > Which of the Ceratopsians were contemporaries in the same areas? It's
 interesting to think there was interaction among species.<

 From the Judith River Wedge of Dinosaur Provincial Park in Canada,theres
Styracosaurus albertensis and Centrosaurus apertus in the Campanian Late
Cretaceous,and Triceratops horridus and Torosaurus latus in the
Maastrichtian Late Cretaceous in the Lance Formation in Wyoming.

John Bridgman