Labels:text | font | paper | screenshot | letter | document OCR: Teeth found in Montana in 1855 have since been identified as belonging to a horned dinosaur, Monoclonius. But it was Edward Drinker Cope (1840-97) who found the first significant horned dinosaur remains in Wyoming in 1876. Cope and his team recovered a number of fossils, now recognized as horned dinosaur bones. However, as no skull was found at the time, their scientific value was not realized. MARSH'S "BISON" In 1887, Othniel Marsh obtained a pair of very large, bony horn cores. They had been found in rocks formed late in the Cretaceous Period (144-65 MYA) at Green Mountain Creek, near Denver, Colorado. Marsh mistakenly thought they belonged to a recently extinct species of buffalo, so he gave the animal the name Bison alticornis. TRICERATOPS John Bell Hatcher was fossil-collecting for Marsh when he found a Triceratops skull in 1888. A rancher in Wyoming told him where to find a skull "with horns as long as a hoe handle and eye holes as big as a hat." Hatcher reacted swiftly. He sent one of the horns to Marsh, who realized it was the same as that of his wrongly identified bison. The following year, Marsh had the complete massive skull of Triceratops in his fossil collection. HATCHER'S LEGACY Hatcher spent the next four years, from 1889-92, recovering more than 50 horned dinosaur skulls from the Lance Formation near Lusk, Wyoming. Many of them were in almost perfect condition. Among the skulls was a beautiful specimen of Torosaurus. It had the largest head of any known land animal. Marsh died in 1899 before he could complete his description of the horned dinosaurs, and Hatcher, who had found so many of the specimens himself , was chosen to complete the work. By the time Hatcher died of typhoid in 1904, he was recognized as a world authority on horned dinosaurs.
(.png)
