Hypsibema Hypsibema (HIP-sih-BEE-muh; “High Step”) is a genus of large herbivorous dinosaur, likely a type of hadrosauroid or “duck-billed” dinosaur, that lived during the Late Cretaceous period, around 75 to 73 million years ago. Fossils of Hypsibema have been found in North America, specifically in Missouri and North Carolina. The genus was first named by […]
Hypsilophodon: Profile of an Agile Cretaceous Herbivore Hypsilophodon (HIP-sih-LOH-fuh-don; “high-ridged tooth”) Hypsilophodon is a genus of small, agile ornithopod dinosaur that lived during the Early Cretaceous period, approximately 130 to 125 million years ago. Its fossils have been found primarily in the Wealden Group of the Isle of Wight, England, with other possible remains discovered
Hypsirophus: Profile of a Prehistoric Giant Hypsirophus Hypsirophus (HIP-see-ROH-fuss; “high roof”) Hypsirophus is a genus of dinosaur that has a complex history in paleontology. It was named by the American paleontologist Edward Drinker Cope in 1878 based on fragmentary fossil remains, primarily vertebrae, discovered in the Morrison Formation of Colorado, USA. These rocks date to
Iberospinus: Profile of a Prehistoric Giant Iberospinus Iberospinus (ee-BEH-roh-SPY-nus; “Iberian spine”) is a genus of spinosaurid theropod dinosaur that lived during the Early Cretaceous period, approximately 130 to 125 million years ago. Fossils of this dinosaur were discovered in the Papo Seco Formation in Portugal, part of the Iberian Peninsula. The name Iberospinus combines “Iberia,”
Ichthyovenator: Profile of a Prehistoric Giant Ichthyovenator Ichthyovenator (IK-thee-oh-VEN-uh-tor; “Fish Hunter”) is a genus of spinosaurid theropod dinosaur that lived during the Early Cretaceous period, approximately 125 to 113 million years ago (Aptian stage). Its fossils were discovered in the Grès Supérieurs Formation in the Savannakhet Basin of Laos. The type species, Ichthyovenator laosensis, was
Ignavusaurus: Profile of a Prehistoric Giant Ignavusaurus Ignavusaurus (ig-NAH-voo-SAWR-us; “lazy lizard”) is a genus of sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 199 to 190 million years ago. Its fossils were discovered in Lesotho, a country in Southern Africa. The name Ignavusaurus comes from the Latin word “ignavus,” meaning lazy, and the
Iguanacolossus: Profile of a Prehistoric Giant Iguanacolossus Iguanacolossus (ig-WAH-nuh-kuh-LOSS-us; “Iguana Colossus”) is a genus of large iguanodontian dinosaur that lived during the Early Cretaceous period, about 130 million years ago. Its fossils were discovered in what is now Utah, in the United States, within the Cedar Mountain Formation. The name Iguanacolossus curriei was given by
Iguanodon: Profile of a Prehistoric Giant Iguanodon Iguanodon (eye-GWAN-oh-don; “Iguana tooth”) is a genus of ornithopod dinosaur that lived during the Early Cretaceous period, approximately 130 to 122 million years ago. Fossils of Iguanodon have been found primarily in Europe, particularly Belgium, England, Spain, and Germany, with some remains also discovered in North America and
IJburgia: Profile of an Early Jurassic Ornithopod IJburgia IJburgia (EYE-berg-ee-ah; “IJburg’s lizard”) is a genus of small ornithischian dinosaur that lived during the Early Jurassic period, approximately 190 to 180 million years ago, in what is now the Netherlands, Europe. The name refers to the IJburg district in Amsterdam, where the initial fossils were found
Ikrandraco: Profile of the Dragon-Crested Pterosaur Ikrandraco Ikrandraco (ih-KRAN-drah-koh; “Ikran dragon”) is a genus of pterosaur, a type of flying reptile, that lived during the Early Cretaceous period, around 120 million years ago. Its fossils were discovered in Liaoning Province, China, an area famous for its exceptionally preserved fossils. The name Ikrandraco comes from “Ikran,”
