Othniel Charles Marsh
"Triceratops" has been documented by numerous remains collected since the genus was first described in 1889 by American paleontologist Othniel Charles Marsh. Specimens representing life stages from hatchling to adult have been found. As the archetypal ceratopsid, "Triceratops" is one of the most popular dinosaurs, and has been featured in film, postal stamps, and many other types of media.