Saurischia


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Saurischia

[sȯ′ris·kē·ə]
(paleontology)
The lizard-hipped dinosaurs, an order of extinct reptiles in the subclass Archosauria characterized by an unspecialized, three-pronged pelvis.

Saurischia

 

an order of dinosaurs. Saurischians are characterized by a triradiate pelvic girdle, a feature of most reptiles, which distinguishes them from the ornithischians. They lived from the middle of the Triassic period to the end of the Cretaceous period. They are grouped into two suborders on the basis of their structure and way of life: the predatory bipedal Theropoda and the herbivorous Sauropoda. Saurischians were widely distributed throughout the planet.

References in periodicals archive ?
(2007): A new titanosauriform sauropod (Dinosauria: Saurischia) from the Early Cretaceous of central Texas and its phylogenetic relationships.
(2003): The anatomy and taxonomy of Cetiosaurus (Saurischia, Sauropoda) from the Middle Jurassic of England.
(2007): A sinraptorid theropod (Dinosauria: Saurischia) from the Phu Kradung Formation of northeastern Thailand.
In 1888, it was decided by Harry Seeley, a well known paleontologist, that dinosaurs should be divided into two major groups based on the shape of their hips- the bird-hipped (Ornithischia) and the lizard-hipped (Saurischia).