psittacosaur

Thân thiện

A psittacosaur stands on two legs in a prehistoric forest.

Definition

Noun: 1. A primitive ornithischian dinosaur: Psittacosaur refers to a genus of small, herbivorous dinosaurs from the Early Cretaceous period. It is characterized by a parrot-like beak, long hind limbs, short forelimbs, and a very small, rudimentary bony frill at the back of the skull. It is considered a basal member of the ceratopsian group.

Usage

• The term psittacosaur is used specifically in paleontology and related scientific contexts to refer to this distinct genus of dinosaur.
• It functions as a countable noun (e.g., , ).

Examples

• The fossil discovery included a nearly complete skeleton of a psittacosaur.
• Psittacosaurs are believed to have been agile runners due to their long hind legs.
• Scientists study the psittacosaur to understand the early evolution of horned dinosaurs.

Advanced Usage

• The name is derived from Greek ( meaning "parrot" and meaning "lizard"), directly referencing its distinctive beak. It is sometimes informally called a "parrot-lizard."
• In scientific classification, it is the type genus of the family Psittacosauridae.

Variants and Related Words

• Psittacosaurus (n): The full, formal scientific name of the genus. The terms and are often used interchangeably in general contexts.
• Psittacosaurid (n/adj): (Noun) A member of the family Psittacosauridae. (Adjective) Relating to or characteristic of this family.

Synonyms

• Parrot-beaked dinosaur: A descriptive, non-scientific synonym highlighting its most distinctive feature.

Notes on Different Meanings

The word psittacosaur has only one specific meaning in modern English: it refers exclusively to this genus of dinosaur. It is not used in idiomatic expressions or phrasal verbs.

Học thuật

Noun

1. primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal

Từ đồng nghĩa

• psittacosaurus