What is the meaning of ornithischian?
Definition of ornithischian : any of an order (Ornithischia) of herbivorous dinosaurs (such as a stegosaurus) that have the pubis of the pelvis rotated backward to a position parallel and close to the ischium — compare saurischian.
What does saurischian and ornithischian mean?
Brian Switek, Scientific American Blog Network, 15 May 2017 In the old system, ornithischians were considered plant eaters while all the meat eating dinosaurs were saurischians, meaning that the trait of eating meat could have evolved after the two main branches of dinosaurs split. — Jason Daley, Smithsonian, 24 Mar.
Which of the following are all ornithischian dinosaurs?
Ceratopsians such as Centosaurus, Pentaceratops, and Triceratops were a horned group of ornithischian dinosaurs. Dinosaurs come in all shapes and sizes, but scientists separate species into two major groups: saurischia and ornithischia.
What characterizes a member of the Thyreophora?
Thyreophora (also called ‘longshield bearers’) are herbivores from the order Ornithischia. Ornithipods are land-based reptiles with hips similar to that of a bird. They are identified by their osteoderms, or bony plates or spikes which form an armor that protects them from predators.
Is a Brachiosaurus a ornithischian?
Brachiosaurus is an extinct genus of huge, sauropod dinosaurs that lived during the late Jurassic period. Sauropods comprise a suborder or infraorder of the saurischian (“lizard-hipped”) dinosaurs, and in general were large, herbivorous dinosaurs.
Is an Iguanodon a ornithischian?
Iguanodon gives its name to the unranked clade Iguanodontia, a very populous group of ornithopods with many species known from the Middle Jurassic to the Late Cretaceous.
Was Stegosaurus an ornithischian?
Towering giants such as Tyrannosaurus rex and Apatosaurus are both saurischians, but many plant-eating dinosaurs, including Triceratops and Stegosaurus, are classified as ornithiscians—which means bird-hipped—because their pubis bone was originally thought to resemble that of birds.
Is a Parasaurolophus a ornithischian?
Parasaurolophus (/ˌpærəsɔːˈrɒləfəs, -ˌsɔːrəˈloʊfəs/; meaning “near crested lizard” in reference to Saurolophus) is a genus of herbivorous hadrosaurid ornithopod dinosaur that lived in what is now North America and possibly Asia during the Late Cretaceous Period, about 76.5–73 million years ago.