During the dinosaur era, iconic tyrannosauroids like T. rex notoriously controlled the top of the food web. However, the T-Rex was not always the king.
Professor Yoshitsugu Kobayashi, the senior author of the Hokkaido University Museum, states, "Ulughbegsaurus uzbekistanensis fills a significant gap in the fossil record, demonstrating that carcharodontosaurians were found all over the continent, from Europe to East Asia.
Furthermore, this big predator's cohabitation with a smaller tyrannosauroid indicates important limitations on the transition of the apex predator niche in the Late Cretaceous as one of the last surviving carcharodontosaurians in Laurasia."
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