theropod dinosaur
Học thuậtThân thiện
A paleontologist carefully brushes the fossilized skeleton of a theropod dinosaur.
Definition
Noun: A theropod dinosaur is any member of a major group of carnivorous dinosaurs that existed from the Triassic to the Cretaceous periods. They are characterized by having short forelimbs and walking or running on strong, powerful hind legs.
Usage
The term theropod dinosaur is used scientifically to classify and describe this specific subgroup of dinosaurs. It is typically used in paleontological, zoological, and educational contexts. * Tyrannosaurus rex is perhaps the most famous theropod dinosaur. * The fossil record shows that theropod dinosaurs were primarily bipedal predators.
Advanced Usage
- Phylogenetic Context: In modern cladistics, the term "Theropoda" is a clade that includes not only traditional carnivorous dinosaurs but also birds, which are considered their living descendants. Therefore, in a strict scientific sense, theropod dinosaur can sometimes be used to distinguish the non-avian members of this group.
- The discovery of feathered fossils provided crucial evidence linking birds to theropod dinosaurs.
Variants and Related Words
- Theropod (noun): The shortened, more common form of "theropod dinosaur."
- Velociraptor was a small, agile theropod.
- Theropoda (noun): The scientific name for the suborder or clade containing these dinosaurs.
Synonyms
- Predatory dinosaur: A more descriptive, non-technical synonym emphasizing their carnivorous nature.
- Carnivorous dinosaur: A general term that includes theropods but may also refer to other meat-eating dinosaurs not in the Theropoda group (e.g., some early types).
Related Terms and Concepts
- Saurischian: The larger "lizard-hipped" dinosaur order to which theropods belong.
- Bipedal: Describing an animal that walks on two legs, a key characteristic of theropods.
- Coelurosaur: A major subgroup of theropods that includes tyrannosaurs, raptors, and birds.
- Carnosaur: Another subgroup of large theropods, such as .
A paleontologist carefully brushes the fossilized skeleton of a theropod dinosaur.
Noun
- any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs