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Machairasaurus: Profile of a Prehistoric Giant Machairasaurus Machairasaurus (mah-KIE-rah-SAWR-us; “Bent Sword Lizard”) is a genus of oviraptorid theropod dinosaur that lived during the Late Cretaceous period, about 70 million years ago, in what is now the Gobi Desert of Mongolia. The name Machairasaurus comes from the ancient Greek word “makhaira,” meaning a bent, single-edged sword […]

“`html Macrodontophion: Profile of a Mysterious Prehistoric Reptile Macrodontophion Macrodontophion (MAK-roh-DONT-oh-FYE-on; “Large-toothed Biter”) is a genus of reptile, possibly a theropod dinosaur, known from the Late Cretaceous period, approximately 100.5 to 93.9 million years ago (Cenomanian stage), in what is now Ukraine. The name Macrodontophion comes from Greek words meaning “large tooth” and “biter” or

Macrogryphosaurus Macrogryphosaurus (MA-kroh-GRIFF-oh-SAWR-us; “large enigmatic lizard”) is a genus of herbivorous ornithopod dinosaur that lived during the Late Cretaceous period, approximately 89 to 86 million years ago, in what is now Argentina, South America. The name comes from the Greek “makros” (large), “gryphos” (enigmatic or griffin-like), and “sauros” (lizard), referring to its large size and

“`html Macrophalangia Macrophalangia (MAK-roh-fuh-LAN-jee-uh; “Large Finger/Toe Bones”) is a genus of dinosaur that lived during the Late Triassic period, approximately 215 to 205 million years ago. Its fossils, consisting of a few large toe bones (phalanges), were discovered in what is now Germany. The genus was named by paleontologist Friedrich von Huene in 1932. Initially,

“`html Macrurosaurus Macrurosaurus (MAH-kroor-oh-SAWR-us; “Long-tailed lizard”) is a genus of titanosauriform sauropod dinosaur that lived during the Early Cretaceous period, approximately 112 to 100 million years ago. Its fossil remains have been found primarily in the Cambridge Greensand formation of England, with some possible material also reported from France. The name Macrurosaurus was given by

“`html Magnapaulia: Profile of a Prehistoric Giant Magnapaulia Magnapaulia (MAG-nuh-PAWL-ee-ah; “Large Paul”) is a genus of very large lambeosaurine hadrosaurid dinosaur that lived during the Late Cretaceous period, about 75.5 to 73.5 million years ago. Its fossils were discovered in the El Gallo Formation in Baja California, Mexico. The name honors Paul G. Haaga Jr.,

“`html Magnirostris: Profile of a Prehistoric Giant Magnirostris Magnirostris (MAG-nih-ROS-tris; “Large snout”) is a genus of protoceratopsid ceratopsian dinosaur that lived during the Late Cretaceous period, approximately 76 to 72 million years ago. Its fossils were discovered in the Bayan Mandahu Formation of Inner Mongolia, China. The name Magnirostris refers to its most notable feature:

“`html Magnosaurus: Profile of a Prehistoric Giant Magnosaurus Magnosaurus (MAG-no-SAWR-us; “Great lizard”) is a genus of megalosaurid theropod dinosaur that lived during the Middle Jurassic period, approximately 168 to 166 million years ago, in what is now England. The name reflects its considerable size for a predator of its time. Magnosaurus was first named by

“`html Magyarosaurus: Profile of a Prehistoric Dwarf Magyarosaurus Magyarosaurus (MAHD-yahr-oh-SAWR-us; “Magyar lizard”) is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, specifically the Maastrichtian stage, about 70 to 66 million years ago. Its fossils have been discovered in what is now Romania, in an area known as the Hațeg Basin,

Mahakala: A Small but Significant Dromaeosaur Mahakala Mahakala (MAH-hah-KAH-lah; “Mahakala, the Great Black One” or “Lord of Time”) is a genus of small dromaeosaurid theropod dinosaur that lived during the Late Cretaceous period, approximately 80 to 75 million years ago (Campanian stage). Its fossils were discovered in the Djadochta Formation of the Gobi Desert in