Dyslocosaurus: Profile of the Mysterious ‘Badly Placed Lizard’ Dyslocosaurus Dyslocosaurus (DISS-loh-koh-SAWR-us; “badly placed lizard”) is a genus of sauropod dinosaur known from very limited fossil remains. The name refers to the great confusion about where its bones were originally found and, therefore, which time period it lived in. These fossils were collected in Wyoming, USA, […]
Dystrophaeus: Profile of a Prehistoric Giant Dystrophaeus Dystrophaeus (diss-TROH-fee-us; “bad joint”) is a genus of sauropod dinosaur that lived during the Late Jurassic period, approximately 155 to 150 million years ago, in what is now Utah, North America. The name, given by paleontologist Edward Drinker Cope in 1877, means “bad joint” and likely refers to
Dystylosaurus: Profile of a Prehistoric Giant Dystylosaurus Dystylosaurus (DIE-stile-oh-SAWR-us; “double-beamed lizard”) is a genus of sauropod dinosaur that lived during the Late Jurassic period, about 150 million years ago. Its fossils, specifically a single partial back vertebra (backbone), were discovered in the Morrison Formation in Colorado, USA. Paleontologist James A. Jensen named Dystylosaurus in 1985.
Echinodon: Profile of a Small, Spiny-Toothed Dinosaur Echinodon Echinodon (ECH-ih-no-don; “spiny tooth”) is a genus of small ornithischian dinosaur that lived during the Early Cretaceous period, specifically the Berriasian stage, about 145 to 140 million years ago. Its fossils were discovered in the Purbeck Limestone Group in Dorset, southern England. The name Echinodon, given by
Edmontonia: Profile of a Prehistoric Giant Edmontonia Edmontonia (ed-MON-toh-NEE-uh; “From Edmonton”) is a genus of nodosaurid ankylosaurian dinosaur that lived during the Late Cretaceous period, approximately 76 to 69 million years ago. Fossils of this heavily armored herbivore have been found in what is now western North America, particularly in Alberta, Canada, and the western
Edmontosaurus: Profile of a Prehistoric Giant Edmontosaurus Edmontosaurus (ed-MON-toh-SAWR-us; “Lizard from Edmonton”) is a genus of hadrosaurid, or duck-billed, dinosaur that roamed western North America during the Late Cretaceous period, approximately 73 to 66 million years ago. This makes it one of the last non-avian dinosaurs before the major extinction event that ended the Mesozoic
Efraasia: Profile of a Prehistoric Giant Efraasia Efraasia (eh-FRAH-see-ah; “For Fraas”) is a genus of basal sauropodomorph dinosaur that lived during the Late Triassic period, approximately 210 million years ago, in what is now Germany. The name honors the German paleontologist Eberhard Fraas, who discovered and studied many of the fossils later assigned to this
Einiosaurus: Profile of a Prehistoric Giant Einiosaurus Einiosaurus (EYE-nee-oh-SAWR-us; “Buffalo Lizard”) is a genus of centrosaurine ceratopsid dinosaur that lived during the Late Cretaceous period, approximately 75 to 74 million years ago. Its fossils have been discovered in what is now northwestern Montana, USA, specifically in the Two Medicine Formation. The name “Einiosaurus” comes from
Ekrixinatosaurus: Profile of a Prehistoric Giant Ekrixinatosaurus Ekrixinatosaurus (eh-KRIK-sih-NAH-toh-SAWR-us; “Explosion-born lizard”) is a genus of abelisaurid theropod dinosaur that lived during the Late Cretaceous period, specifically the Cenomanian stage, about 99 to 97 million years ago. Its fossils were discovered in the Candeleros Formation in Patagonia, Argentina, South America. The name Ekrixinatosaurus refers to the
Elachistosuchus: Profile of an Enigmatic Permian Reptile Elachistosuchus Elachistosuchus (eh-LAK-iss-toh-SOO-kus; “Smallest Crocodile” or “Least Crocodile”) is a genus of small, extinct reptile that lived during the Late Permian period, approximately 259 to 254 million years ago. Its fossils were discovered in what is now Germany. The name Elachistosuchus comes from Greek words meaning “smallest crocodile,”
