Changes

*Ceratopsia

*Ceratopsia

::Species of this infraorder carried one or more horns on their heads, as well as a shield-like frill to protect the neck.

::Species of this infraorder carried one or more horns on their heads, as well as a shield-like frill to protect the neck.

:::''Triceratops''  

:::''[[Triceratops]]''  

:::''Pachyrhinosaurus''

:::''[[Pachyrhinosaurus]]''

:::''Torosaurus''

:::''[[Torosaurus]]''

:::''Protoceratops''  

:::''[[Protoceratops]]''  

:::''Styracosaurus''  

:::''[[Styracosaurus]]''  

*Stegosauria

*Stegosauria

::Large dinosaurs with a row of bony plates on top of their backs, and several spikes used as a defensive weapon at the end of their tails.

::Large dinosaurs with a row of bony plates on top of their backs, and several spikes used as a defensive weapon at the end of their tails.

:::''Stegosaurus''

:::''[[Stegosaurus]]''

:::''Huayangosaurus''

:::''[[Huayangosaurus]]''

:::''Kentrosaurus''

:::''[[Kentrosaurus]]''

*Ankylosauria

*Ankylosauria

::Heavily-armored dinosaurs, some with a row of spikes along each side, and possessing a bony tail club.

::Heavily-armored dinosaurs, some with a row of spikes along each side, and possessing a bony tail club.

:::''Ankylosaurus''  

:::''[[Ankylosaurus]]''  

:::''Euoplocephalus''  

:::''[[Euoplocephalus]]''  

:::''Edmontonia''  

:::''[[Edmontonia]]''  

*Ornithopods

*Ornithopods

::Large, herd-dwelling dinosaurs that could run bipedaly.  Several species had a "boss" of bone on their heads (Pachycephalosaurs) which may have been used for head-butting similar to bighorn sheep; others a crest of bone (hadrosaurs) which may have been sound resonators.  

::Large, herd-dwelling dinosaurs that could run bipedaly.  Several species had a "boss" of bone on their heads (Pachycephalosaurs) which may have been used for head-butting similar to bighorn sheep; others a crest of bone (hadrosaurs) which may have been sound resonators.  

:::''Camptosaurus''  

:::''[[Camptosaurus]]''  

:::''Iguanodon''

:::''[[Iguanodon]]''

:::''Pachycephalosaurus''  

:::''[[Pachycephalosaurus]]''  

:::''Parasaurolophus''

:::''[[Parasaurolophus]]''

:::''Edmontosaurus''

:::''[[Edmontosaurus]]''

:::''Bactrosaurus''

:::''[[Bactrosaurus]]''

:::''Maiasaura''

:::''[[Maiasaura]]''

==Highlights of the history of dinosaur paleontology==

==Highlights of the history of dinosaur paleontology==