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''Titanoceratops'' ( meaning "titanic horn face") is a genus of herbivorous ceratopsian dinosaur. It was a giant chasmosaurine ceratopsian that lived during the Late Cretaceous period (late Campanian, 74.7–73.5 Ma, although it could have lived as late as 72.82 Ma) in what is now New Mexico, and the earliest known member of Triceratopsini. It was named in 2011 by Nicholas R. Longrich for a specimen previously thought to belong to ''Pentaceratops''. ''Titanoceratops'' was named for its giant skull, and the type species was named ''T. ouranos'', after the father of the Greek titans. It is known solely from the holotype OMNH 10165, a partial skeleton including a mostly complete skull and jaws. The skeleton has a reconstructed skull measuring long, which makes it an easy candidate for the longest skull of any land vertebrate. With an estimated weight of and length of , ''Titanoceratops'' can compare to the giant sizes of ''Torosaurus'' and ''Triceratops''. The holotype skeleton, OMNH 10165, was found in the upper layers of the Fruitland Formation, or the lower layers of the Kirtland Formation. The border between the two formations is very bold, but the location of the original quarry has been lost, so it is not certainly known whether of not ''Titanoceratops'' is known from either formation. Either way, the formations are both from the Kirtlandian land-vertebrate age, latest Campanian in age. ==Discovery and naming== The holotype of ''Titanoceratops'' is thought to come from the upper Fruitland Formation or the lower Kirtland Formation based on field notes and the lithology of the matrix surrounding the fossils, but unfortunately the precise location of the quarry is no longer known. Because the location of the quarry is no longer known, the bold border between the formations can not be discriminated. The species was formally named by Nicholas R. Longrich in 2011 and the type species is ''Titanoceratops ouranos''. Previously, its fossils were assigned to ''Pentaceratops'',〔 although its separation is not certain〔 and the two binomials are treated as synonymous according to Wick & Lehman (2013).〔 The holotype specimen consists of most of the fore and hindlimbs, some vertebrae, a fairly complete skull with only one small section of the frill, and partial lower jaws. Named by Longrich, ''Titanoceratops'' is derived from the Greek ''titan'', a mythical race of giants, ''keras'' (κέρας), meaning "horn", and ''ops'' (ὤψ), "face". ''Ouranos'', the specific name, refers to Ouranos, the father of the titan race.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Titanoceratops」の詳細全文を読む スポンサード リンク
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