Complex sentence: The most famous specimens of "Dunkleosteus" are displayed at the Cleveland Museum of Natural History, and others are displayed at the American Museum of Natural History, State Museum of Pennsylvania, Harrisburg and in the Queensland Museum in Brisbane, Queensland.
Split into simpler sentences: The most famous specimens of "Dunkleosteus" are displayed at the Cleveland Museum of Natural History. Others are displayed at the American Museum of Natural History, State Museum of Pennsylvania, Harrisburg and in the Queensland Museum in Brisbane, Queensland.