Theropods (Theropoda) are a diverse group of primarily bipedal dinosaurs, most of which were carnivorous. They first appeared in the Late Triassic and include everything from tiny, feathered species to gigantic apex predators. They are characterized by hollow bones, three-toed limbs, and, in many cases, feathers—traits that link them closely to modern birds.
- Bipedal locomotion with three main toes (tridactyl feet)
- Hollow, air-filled bones (pneumatic) for lightness
- Most were carnivorous, but some later forms became omnivorous or herbivorous
- Include the closest relatives and ancestors of birds
Conclusion
Theropods are the dynamic, often fearsome bipedal dinosaurs that bridge the gap between classic reptilian dinosaurs and modern birds.
- Bipedal and mostly carnivorous, with some evolving feathers and bird-like traits
- Include iconic predators like T. rex and Velociraptor, as well as avian ancestors like Archaeopteryx
- Their fossil record reveals key insights into the evolution of feathers, flight, and complex behaviors
Theropods are known for bipedal locomotion, hollow bones, and three-toed feet. While many had feathers, not all species did.
Theropods first appeared in the Late Triassic.
T. rex, Velociraptor, and Archaeopteryx are theropods. Triceratops and Stegosaurus are not.
'Theropod' means 'beast foot,' referring to their distinctive, clawed toes.