CERATOPSIA
SER-a-TOP-see-a
Horn-faced reptiles
Ornithischia
Middle to late Cretaceous
North America and Asia
The Infraorder Ceratopsia includes the horned dinosaurs. They
had horns on their noses and above their eyes, and a bony frill
running back from the head over the neck. There were
manydifferent kind, but they have only been found in North
America and Asia. There were two primitive groups (psittacosaurids
and protoceratopsids) and a large advanced group (ceratopsids).
Family Ceratopsidae
Family Protoceratopsidae
MICROCERATOPS
Family Psittacosaridae
