saurischian

Thân thiện

A saurischian dinosaur stands in a prehistoric forest.

Definition

Noun: A saurischian is a member of the Saurischia, one of the two major orders of dinosaurs. This group is characterized by a three-pronged pelvic structure where the pubis bone points forward, similar to the pelvis of a crocodile or a lizard. Saurischians include both carnivorous (theropods) and herbivorous (sauropodomorphs) dinosaurs.

Usage Examples

• Noun:
  • The Tyrannosaurus rex is a famous example of a carnivorous saurischian.
  • The massive, long-necked Apatosaurus was a herbivorous saurischian.

Advanced Usage

• In Paleontological Classification: The term is used to distinguish dinosaurs from the other major order, the Ornithischia ("bird-hipped" dinosaurs). Despite the name "lizard-hipped," birds are actually descended from theropod saurischians.
  • The discovery helped clarify the evolutionary relationship between theropod saurischians and modern birds.

Variants and Related Words

• Saurischia (n): The scientific order name to which all saurischians belong.
  • The order Saurischia is divided into two main groups: Theropoda and Sauropodomorpha.

Synonyms

• Lizard-hipped dinosaur: A descriptive synonym based on the pelvic structure.

Antonyms

• Ornithischian: A member of the other major dinosaur order characterized by a "bird-hipped" pelvis.

Học thuật

Noun

1. herbivorous or carnivorous dinosaur having a three-pronged pelvis like that of a crocodile

Từ đồng nghĩa

• saurischian dinosaur