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Leptoceratops
''Leptoceratops'' (meaning 'little-horned face' and derived from Greek lepto-/λεπτο- meaning 'small', 'insignificant', 'slender', 'meagre' or 'lean', cerat-/κερατ- meaning 'horn' and -ops/ωψ meaning face), is a genus of primitive ceratopsian dinosaurs from the late Cretaceous Period (late Maastrichtian age, 66.8-66 Ma ago) of what is now Western North America. Their skulls have been found in Alberta, Canada and in Wyoming.
''Leptoceratops'' could probably stand and run on their hind legs: analysis of forelimb function indicates that even though they could not pronate their hands, they could walk on four legs.〔 〕 ''Leptoceratops'' was around long and could have weighed between .
==Discovery and species==
The first small ceratopsian named, ''Leptoceratops'' was discovered in 1910 by Barnum Brown in the Red Deer Valley in Alberta, Canada. He described it four years later. The first specimen had a part of its skull missing, however there have been later well-preserved finds by C. M. Sternberg in 1947, including one complete fossil. Later material was found in 1978 in the Bighorn Basin of northern Wyoming.
The type species is ''Leptoceratops gracilis''. In 1942, material collected in Montana was named ''Leptoceratops cerorhynchos'' but this was later renamed ''Montanoceratops''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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