In his 1905 paper naming Albertosaurus, Osborn described two additional tyrannosaur specimens that had been collected from in Montana and Wyoming during a 1902 expedition of the American Museum of Natural History, led by Barnum Brown.
I sitt papper namngivande Albertosaurus 1905 beskrev Osborn 2 extra tyrannosaurie exemplar som hade samlats in från Montana och Wyoming under en expedition från American Museum of Natural History, ledd av Barnum Brown 1902.