Ceratopsidae

Centrosaurine ceratopsids did not fully develop their cranial ornamentation until fully grown. Scott Sampson argues that comparing ceratopsids to modern mammals with a similar lifecycle can yield insight into the socioecology of the ancient horned dinosaurs.

Skull comparison among several ceratopsids

Ceratopsidae (sometimes spelled Ceratopidae) is a speciose group of marginocephalian dinosaurs including Triceratops and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous, mainly of Western North America (though Sinoceratops is known from Asia) and are characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. The group is divided into two subfamilies. The Ceratopsinae or Chasmosaurinae are generally characterized by long, triangular frills and well-developed brow horns. The Centrosaurinae had well-developed nasal horns or nasal bosses, shorter and more rectangular frills, and elaborate spines on the back of the frill.

单词	Ceratopsids
释义	Ceratopsids 英语百科 Ceratopsidae Ceratopsidae (sometimes spelled Ceratopidae) is a speciose group of marginocephalian dinosaurs including Triceratops and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous, mainly of Western North America (though Sinoceratops is known from Asia) and are characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. The group is divided into two subfamilies. The Ceratopsinae or Chasmosaurinae are generally characterized by long, triangular frills and well-developed brow horns. The Centrosaurinae had well-developed nasal horns or nasal bosses, shorter and more rectangular frills, and elaborate spines on the back of the frill.
随便看	advance payment of bond advance payment of income tax advance payment of premium advance payments for future purchases advance pending reimbursement advance performance advance per revolution advance per round advance person advance planning advance planning 5 years Advance poll advance polls advance position advance post advance potential Advance Pregnancy Test advance, preliminary and final estimate advance premium advance preparation advance price advance prices advance primitives advance print advance process control

Ceratopsids

Ceratopsidae