Schizodon: Profile of a Prehistoric Giant Schizodon Schizodon (SKEE-zoh-don; “Split Tooth”) is a genus of herbivorous ornithopod dinosaur that lived during the Early Cretaceous period, approximately 125 to 113 million years ago. Fossil remains of Schizodon have been discovered in what is now northern China, offering insights into the diverse dinosaur ecosystems of ancient Asia. […]
Scipionyx: A Detailed Profile of the ‘Ciro’ Fossil Scipionyx Scipionyx (SHIP-ee-OH-nicks; “Scipio’s claw”) is a genus of small compsognathid theropod dinosaur that lived during the Early Cretaceous period, about 113 million years ago, in what is now Italy. The name honors the Italian geologist Scipione Breislak, who first described the limestone deposit where the fossil
Scleromochlus: Profile of a Pivotal Prehistoric Reptile Scleromochlus Scleromochlus (SKLAIR-oh-MOKE-lus; “stiff limb” or “hardened lever”) is an extinct genus of small archosauriform reptile that lived during the Late Triassic period, approximately 235 to 228 million years ago. Its fossils were discovered in the Lossiemouth Sandstone Formation of Scotland. First described by paleontologist Arthur Smith Woodward
Scolosaurus Scolosaurus (SKOH-loh-SAWR-us; “Pointed stake lizard”) is a genus of armored ankylosaurid dinosaur that roamed what is now Alberta, Canada, during the Late Cretaceous period, approximately 76.5 to 75 million years ago. The name Scolosaurus refers to the pointy, thorn-like nature of some of its bony armor plates. Fossils of this dinosaur have been found
Scutellosaurus: Profile of an Early Armored Dinosaur Scutellosaurus Scutellosaurus (SKOO-tel-oh-SAWR-us; “Little Shield Lizard”) is a genus of small, armored ornithischian dinosaur that lived during the Early Jurassic period, about 200 to 190 million years ago. Its fossils have been discovered in what is now Arizona in North America. The name Scutellosaurus, given by paleontologist Edwin
Secernosaurus: Profile of a Prehistoric Giant Secernosaurus Secernosaurus (seh-SER-no-SAWR-us; “Separated Lizard”) is a genus of hadrosaurid ornithopod dinosaur that lived during the Late Cretaceous period, approximately 70 to 66 million years ago, in what is now South America. The name refers to its discovery on the southern supercontinent of Gondwana, separated from the majority of
Sefapanosaurus: Profile of a Prehistoric Giant Sefapanosaurus Sefapanosaurus (SEH-fah-PAH-noh-SAWR-us; “Cross lizard”) is a genus of sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 200 million years ago, in what is now South Africa. The name Sefapanosaurus comes from the Sesotho word “sefapano,” meaning “cross,” which refers to a distinctive cross-shaped feature on one
Segisaurus Segisaurus (SEJ-ih-SAWR-us; “Segi Canyon lizard”) is a genus of small coelophysoid theropod dinosaur that lived during the Early Jurassic period, about 183 million years ago. Its fossils were discovered in the Navajo Sandstone of Segi Canyon, Arizona, in the United States. Segisaurus was named and described by paleontologist Charles Lewis Camp in 1936 based
Segnosaurus Segnosaurus (SEG-no-SAWR-us; “slow lizard”) is a genus of therizinosaurid theropod dinosaur that lived during the Late Cretaceous period, approximately 98 to 89.8 million years ago, in what is now Mongolia. The name Segnosaurus comes from the Greek words “segnos,” meaning slow or tardy, and “sauros,” meaning lizard, likely referring to its heavy build. It
Seismosaurus Seismosaurus (SIZE-mo-SAWR-us; “Earthquake lizard”) is the name first given to a type of very long plant-eating dinosaur called a sauropod. It lived during the Late Jurassic period, about 155 to 145 million years ago, in what is now New Mexico, in the United States. When its bones were first studied in 1991, scientists named
