 Sternberg sent some of his own specimens to German paleontologist Ferdinand Broili at Munich University , although Broili was not as prolific as Cope when it came to describing specimens . Cope 's rival Othniel Charles Marsh also collected some bones of Dimetrodon , which he sent to the Walker Museum . The first use of the name Dimetrodon came in 1878 when Cope named the species Dimetrodon incisivus , Dimetrodon rectiformis , and Dimetrodon gigas in the scientific journal Proceedings of the American Philosophical Society . 
