Types of Dinosaurs
Tyrannosaurus Rex (theropod)
- Walked on two legs
- Kept itself balanced with its huge head and long & heavy tail
- Could weigh up to 7 tons!
- Had small arms that were extremely powerful and featured two clawed fingers
- Lived in the late Cretaceous Period, around 66 million years ago
- Lived in the late Cretaceous Period
- Could weight up to 33 pounds
- Was around the size of a Turkey
- First known fossil was found in the Mongolian Gobi Desert in 1922
Apatosaurus, also known as a Brontosaurus (sauropod)
- Lived in the Jurassic Period, around 150 million years ago
- One of the largest animals to have ever walked on Earth. Could weigh over 23 metric tons and be 75 feet long!
- Had long whip-like tails that counter balanced their long necks
- Was a herbivore (plant eating)
Brachiosaurus (sauropod)
- Walked on all four legs
- Lived in North America. First fossils were found in the Colorado River of the United States in 1900.
- Herbivores: Ate between 440 and 880 pounds of plants every day!
Triceratops (cerapod)
- Had three horns to protect itself from the Tyrannosaurus Rex which lived during the same time period
- Herbivore
- Lived in the Cretaceous Period (around 65 million years ago)
- Had anywhere between 400 and 800 teeth!
Carnivores vs. Herbivores vs. Omnivores
Herbivores
- Plant eating animals
- Leaves
- Twigs
- Seeds
- Had flat teeth designed for snipping or stripping vegetation
Carnivores
- Eating meat of other animals
- Fellow dinosaurs
- Lizards
- Insects
- Early mammals
- Had long, sharp, and serrated teeth designed for tearing tough meat
Omnivores
- Eat both plants and meat of other animals
- Leaves, twigs, seeds
- Fellow dinosaurs, lizards, insects, early mammals
- Had flat and saw like teeth
