Ornithischia (/ɔ:rnɪ'θɪskiə/) is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure superficially similar to that of birds. The name Ornithischia, or "bird-hipped", reflects this similarity and is derived from the Greek stem 'ornith-' (ὀρνιθ-), meaning "of a bird", and 'ischion' (ἴσχιον), plural 'ischia', meaning "hip joint". However, birds are only distantly related to this group as birds are theropod dinosaurs.
Description[]
"Ornithischia are one of two different orders of dinosaurs. These herbivores with beak-like structures are often called "bird-hipped" dinosaurs, as their pelvic structure resembles that of modern day birds. Parasaurolophus is one of the Ornithiscian dinosaurs."
Traits[]
The rare traits matching this generators type are: Herbivore , Bipedal , Triassic Age . Ornithischia is also affected by the epic traits: Herd Behavior , Hollow Bones , Feathers , Warm Climate .
| Icon | Name | Description | Requires |
|---|---|---|---|
|
Predentary Bone | The predentary bone is a bone at the front of the lower jaw that forms a beak-like apparatus perfect for shearing plant material. It is common in herbivores. | Rank 2 |
|
Duckbills | Some herbivorous dinosaurs had long flattened snouts that looked like the beaks of ducks. These were ideal for plucking twigs and leaves off of plants and trees. | Rank 6 |
Achievements[]
| Icon | Name | Description | Requires |
|---|---|---|---|
|
Skin Deep | One of the best preserved specimens of dinosaur ever discovered was a Hadrosaur found in 1908. It was dubbed the "dinosaur mummy" due to its remarkably preserved skin, and gives insight into what dinosaurs may have looked like when alive. | 75 Ornithischia |
|
Duck Duck Dinosaur | Hadrosaurids, also known as duck-billed dinosaurs, had long, flat beaks specially designed for clipping twigs and leaves. They also had thousands of flat teeth, which were used for grinding food. | 200 Ornithischia |
Trivia[]
Ornithischians with well known anatomical adaptations include the ceratopsians or "horn-faced" dinosaurs (e.g. Triceratops), armored dinosaurs (Thyreophora) such as stegosaurus and ankylosaurs, pachycephalosaurids and the ornithopods. There is strong evidence that certain groups of ornithischians lived in herds, often segregated by age group, with juveniles forming their own flocks separate from adults. Some were at least partially covered in filamentous (hair- or feather- like) pelts, and there is much debate over whether these filaments found in specimens of Tianyulong, Psittacosaurus, and Kulindadromeusmay have been primitive feathers.
