Definition

1. Noun:
   • A taxonomic order of extinct reptiles: "Order Saurischia" is a major division of dinosaurs, characterized by a specific hip structure where the pubis bone points forward. This order traditionally includes both carnivorous theropods and herbivorous sauropods.

Usage Examples

• Noun:
  • The fossil was clearly identifiable as belonging to the order Saurischia.
  • Paleontologists study the evolutionary history of the order Saurischia.
  • Tyrannosaurus rex is one of the most famous members of the order Saurischia.

Advanced Usage

• In taxonomic classification: The term is used in scientific literature to classify and discuss dinosaur lineages.
  • The new discovery prompted a reevaluation of the early evolution within the order Saurischia.

Variants and Related Words

• Saurischian (noun/adjective): A member of the order Saurischia; relating to this order.
  • Saurischian dinosaurs like the Brachiosaurus were enormous.
• Saurischia: Often used without "order" as the proper name of the taxon.
  • Saurischia is one of the two primary branches of Dinosauria.

Synonyms

• Lizard-hipped dinosaurs: A common name based on the hip bone structure, which resembles that of modern lizards.

Noun

1. extinct terrestrial reptiles: theropods (carnivorous); sauropods (herbivorous)