6 feet long, 3 feet tall Late Cretaceous (75 million years ago) Carnivore: probably ate small reptiles, amphibians, and mammals 1942 Mongolia DID YOU KNOW Famous as the man-sized meat-eater in Jurassic Park movies, Velociraptor was actually no bigger than a large dog. But hunting in packs, it could have killed larger dinosaurs with its […]
16 feet tall, 40 feet long weighed 7 tons< Late Cretaceous (75 million years ago) Carnivore: predator/scavenger 1900 Eastern Wyoming DID YOU KNOW Most large predators live solitary lives, but fossils of young and old tyrannosaurs have been found together. It’s possible that they lived in social groups, like modern lions. One T. rex...
9 feet tall, 30 feet long, about 10 tons Late Cretaceous (75 million years ago) Herbivore: ate low-lying plants 1887 Denver, Colorado DID YOU KNOW The short, stocky legs of Triceratops were not built for running. When confronted by a predator, this horned dinosaur probably lowered its head and charged like a modern rhinoceros.
14 feet tall, 30 feet long, weighed 5 tons Late Jurassic (150 million years ago) Herbivore: ate ferns, mosses, and fallen fruit 1877 Colorado DID YOU KNOW The plates on these dinosaurs were probably too fragile to offer much protection. It’s more likely they were used as heat exchangers to help control body temperature. The […]
12 feet tall, 30 feet long, weighed 2½ tons Late Cretaceous (75 million years ago) Herbivore: ate pine needles, leaves, and twig 1920 Alberta, Canad DID YOU KNOW This and other duck-billed dinosaurs may have nested in large colonies. Females dug shallow depressions for their eggs and may have covered the nest with rotting vegetation […]
Estimated at 14 feet long, 5 ½ feet tall Late Cretaceous (75 million years ago) Probably plants, possibly insects and other small animals 1931 Wyoming DID YOU KNOW Little is know about the life of this dinosaur because only skulls have been found to date. The thickened dome on the skull is its best known […]
40 feet tall, 6 feet long Late Cretaceous (75 million years ago) Lizards, and probably insects and eggs 1942 Mongolia DID YOU KNOW The first Oviraptor fossil found was atop a pile of eggs, and researchers assumed it was an egg thief. Later a find of Oviraptor eggs showed that the adult dinosaur was probably […]
8 feet tall. 20 feet long, weighed ½ to Early Jurassic (200 million years ago) Carnivore: predator/scavenger 1942 Arizona DID YOU KNOW Fossils of this dinosaur have been found in a small group They may have traveled or hunted in backs like modern wolves. The unusual crests atop the head could have been used in […]
4 feet tall, 9 feet long, weighed 80 pounds Late Triassic (220 million years ago) Carnivore: quick, nimble predator 1881 Mexico DID YOU KNOW Coelophysis means “hollow form,” referring to the bird-like skeletons of these agile dinosaurs. These predators were probably fast and fierce imagine being chased by a turkey with teeth!
40 feet tall, 85 feet long, weighed 28 tons Late Jurassic (150 million years ago) Herbivore: ate from the tops of tall trees 1900 the Grand River Valley, Colorado DID YOU KNOW These giant dinosaurs probably ate continuously but didn’t do muchchewing. Like birds, sauropods swallowed stones called gastroliths to help grind the fibrous...
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