Pronunciation: PEN-ta-SEH-ruh-tops Meaning: Five horn face Author/s: Osborn (1923) Synonyms: See below First Discovery: New Mexico, USA Chart Position: 102
(Sternberg's five horn face) EtymologyPentaceratops is derived from the Greek "Pente" (five), "ceras" (horn) and "ops" (face), alluding to its five-horned face. Pentaceratops only had three "proper" horns—two on its brow and one on its snout, the other two, as in all ceratopsids and some other ceratopsians, were merely bony projections, one on each cheek. Henry Fairfield Osborn gave Pentaceratops the species epithet sternbergii—after its discoverer Charles Hazelius Sternberg—in 1923.
SynonymsPentaceratops fenestratus (Wiman, 1930)
DiscoveryThe first fossils of Pentaceratops were recovered from the Fruitland Formation, San Juan Basin, New Mexico by Charles Hazelius Sternberg in 1922. By the way, despite its history as part of the "New Spain"—conveniently "forgetting" that Native Americans tribes were there centuries earlier—the extreme northeast of New Mexico was originally ruled by France, and was sold to the United States as part of the Louisiana Purchase in 1803. The holotype (AMNH 6325) is an incomplete skull.