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Dinosaurs

Alioramus, meaning "˜different branch', is a genus of theropod dinosaur from the Late Cretaceous Period (70 to 65 million years ago) from what is now Asia. It is known from a partial skull and three metatarsals (foot bones). It was discovered in the G...

Monolophosaurus, meaning "single-crested lizard", is a genus of carnosaurian dinosaur from the Middle Jurassic Period (170 million years ago) that lived in what is now China. It was named for the single crest on top of its skull. The remains were dug u...

Alaskacephale is a genus of dinosaur from the late Campanian stage of the Late Cretaceous Period (80 to 70 million years ago). It was first described by Roland Gangloff and colleagues as an unnamed pachycephalosaurid, possibly a Pachycephalosaurus, but...

Nothronychus, meaning "slothful claw", is a genus of dinosaur from the mid-Turonian age of the Late Cretaceous Period (91 million years ago). It was discovered in the Moreno Hill Formation in the Zuni Basin, on the border of New Mexico and Arizona. The...

Nomingia is a genus of theropod dinosaur from the Late Cretaceous Period. It was discovered in the Bugin Tsav Beds around the Gobi Desert. It is named for the Nomingiin Gobi, which is part of the nearby Gobi Desert. It was described in 2000 based on se...

Nodosaurus, meaning "knobbed lizard", is a genus of ankylosaurid dinosaur from the Late Cretaceous Period that lived in what is now North America. Two specimens have been discovered in Wyoming and Kansas. Neither specimen had a skull. It is one of the ...

Maiasaura, meaning "good mother lizard", is a genus of dinosaur from the Campanian age of the Upper Cretaceous Period (74 million years ago). It lived in what is now the state of Montana in the United States. It was discovered by paleontologist Jack Ho...

Mahakala is a genus of dinosaur from the Campanian age (80 million years ago) of the Upper Cretaceous Period. It was found in the Djadokhta Formation of Mongolia. It is known from a partial skeleton found in the Gobi Desert. Mahakala is named for one o...

Magnosaurus is a genus of tetanuran theropod dinosaur from the Middle Jurassic Period of England. It was named in 1923 by Friedrich von Huene from a partial skeleton found in Sherborne, in Dorset, England. Magnosaurus is often mixed up with the similar...

Mapusaurus, meaning "earth lizard", is a genus of carnosaurian dinosaur from the Late Cretaceous Period and lived in what is now Argentina. Its remains were discovered in a fossil bed containing at least seven individuals of different life stages. This...

Mantellisaurus is a genus of dinosaur from the Early Cretaceous Period and lived in what is now England. It was discovered by Reginald Hooley in 1917 and was formerly known as a species of Iguanodon, but eventually given its own genus by Gregory Paul i...

Mamenchisaurus, meaning "Mamenchi lizard" (from the Chinese words ma: "horse", men: "gate", and chi: "brook"), is a genus of dinosaur from the Tithonian age of the Late Jurassic Period (150 to 145 million years ago). It was first discovered in 1952 on...

Kentrosaurus, meaning "pointed lizard", is a genus of stegosaur dinosaur from the Late Jurassic Period of what is now Tanzania. It is related to the better known Stegosaurus of North America. It was discovered in the Tendaguru Formation from the Kimmer...

Maxakalisaurus, named for the tribe of Maxakali, is a genus of titanosaurid dinosaur from the Late Cretaceous Period (80 million years ago). It was found in Brazil, 28 miles from the city of Prata in 1998. It was closely related to the sauropod Saltasa...

Masiakasaurus, meaning "vicious lizard", is a genus of theropod dinosaur from the Late Cretaceous Period (70 million years ago), and possibly existed until the end of the dinosaur reign (66 million years ago). The type species, M. knopfleri, was named ...

Melanorosaurus, meaning "Black Mountain Lizard", is a genus of sauropod dinosaur from the Late Triassic Period. It was discovered in the Elliot Formation on the northern slope of Thaba 'Nyama (Black Mountain) in Transkei, South Africa. The type specie...

Megaraptor, meaning "giant thief", is a genus of dinosaur from the Late Cretaceous Period that lived in what is now Argentina. This was one of the largest carnivorous dinosaurs of all time, and once believed to be the largest dromaeosaur ever found. Af...

Lurdusaurus, meaning "weighty lizard", is a genus of ornithopod dinosaur from the Aptian age of the Early Cretaceous Period (121 to 112 mya). It was discovered in Niger. The type species, L. arenatus, was named by Taquet and Russell in 1999. This w...

Lufengosaurus, meaning "Lufeng lizard", is a genus of sauropod dinosaur from the Early and Middle Jurassic Period of what is now southwestern China. It was named by C. C. Young in 1941. The type species, L. huenei, was discovered in the Lower Lufeng Fo...

Lourinhanosaurus, meaning "Lourinhã lizard" (from the Lourinhã Formation), is a genus of dinosaur from the Kimmeridgian/Tithonian age of the Late Jurassic Period. It was first discovered in Portugal in 1982, but was not described until 1998 by Po...