Encyclopedia

Morinosaurus: Profile of a Prehistoric Giant Morinosaurus Morinosaurus (MOH-rih-noh-SAWR-us; “Morini lizard”) is a genus of sauropod dinosaur that lived during the Late Jurassic period, specifically the Kimmeridgian stage, about 155 to 150 million years ago. Its fossils, consisting of a single tooth, were discovered in the Pas-de-Calais region of northern France. The name refers to […]

Moros: Profile of the ‘Harbinger of Doom’ Dinosaur Moros Moros (MOR-ohs; “Intrepid Harbinger of Doom”) is a genus of small tyrannosauroid theropod dinosaur that lived during the Late Cretaceous period, approximately 96 million years ago, in what is now Utah, United States. The name Moros refers to a Greek deity embodying impending doom, hinting at

Morrosaurus Morrosaurus (MOR-roh-SAWR-us; “Lizard from El Morro”) is a genus of ornithopod dinosaur that lived during the Late Cretaceous period, approximately 71 to 66 million years ago. Its fossils were discovered on James Ross Island in Antarctica. The name refers to “El Morro,” a distinctive rock formation near where the dinosaur’s remains were found. Morrosaurus

Mosaiceratops: Profile of an Early Horned Dinosaur Mosaiceratops Mosaiceratops (MO-zay-ih-KER-uh-tops; “Mosaic horned face”) is a genus of small, early neoceratopsian dinosaur that lived during the Late Cretaceous period, approximately 94 to 72 million years ago, in what is now China. The name refers to its skull, which shows a combination, or “mosaic,” of features seen

Mussaurus: Profile of a Prehistoric Giant Mussaurus Mussaurus (MOOS-sore-us; “mouse lizard”) is a genus of sauropodomorph dinosaur that lived during the Late Triassic period, approximately 215 to 203 million years ago, in what is now Argentina. The name Mussaurus refers to the remarkably small size of the first fossil skeletons discovered, which belonged to hatchlings

Muttaburrasaurus: Profile of a Prehistoric Giant Muttaburrasaurus Muttaburrasaurus (MUTT-tah-BURR-ah-SAWR-us; “Muttaburra lizard”) is a genus of ornithopod dinosaur that lived during the Early to mid-Cretaceous period, approximately 112 to 100 million years ago, in what is now northeastern Australia. The name honors the town of Muttaburra, Queensland, where the first fossils were discovered by grazier Doug

Muyelensaurus: Profile of a Prehistoric Giant Muyelensaurus Muyelensaurus (MOO-yeh-len-SAWR-us; “Muyelen lizard”) is a genus of titanosaur sauropod dinosaur that lived during the Late Cretaceous period, about 89 to 86 million years ago. Its fossils were discovered in the Neuquén Province of Patagonia, Argentina. The name Muyelensaurus comes from “Muyelen,” a word used by the indigenous

Mymoorapelta: Profile of an Early Armored Dinosaur Mymoorapelta Mymoorapelta (MY-moor-ah-PEL-tah; “Mygatt-Moore Quarry shield”) is a genus of nodosaurid ankylosaurian dinosaur that lived during the Late Jurassic period, about 155 to 150 million years ago, in what is now western Colorado, USA. Its fossils were found in the Morrison Formation. The name Mymoorapelta combines “Mygatt-Moore,” the

Naashoibitosaurus: Profile of a Prehistoric Giant Naashoibitosaurus Naashoibitosaurus (Nah-ah-shoy-BEE-toh-SAWR-us; “Naashoibito lizard”) is a genus of hadrosaurid or “duck-billed” dinosaur that lived during the Late Cretaceous period, approximately 68 to 66 million years ago. Its fossils were discovered in what is now New Mexico, USA, specifically in the Naashoibito Member of the Kirtland Formation, which gives

Nabawithia: Profile of a Prehistoric Giant Nabawithia Nabawithia (nah-bah-WITH-ee-ah; “River Wanderer”) is a genus of ornithopod dinosaur that lived during the Early Cretaceous period, approximately 125 to 113 million years ago, in what is now North America. The name refers to its presumed habitat near river systems, as suggested by the sedimentary rocks where its