Spondylosoma Spondylosoma (SPON-dih-loh-SOH-mah; “vertebra body”) is a genus of archosaur that lived during the Middle Triassic period, approximately 240 to 230 million years ago. Its fossils were discovered in what is now Brazil, specifically in the Santa Maria Formation. German paleontologist Friedrich von Huene first named and described Spondylosoma in 1942 based on these partial […]
Stackhousia: Profile of a Prehistoric Giant Stackhousia Stackhousia (STAK-how-zee-ah; “Meaning currently unassigned to a dinosaur genus”) The name Stackhousia is not currently recognized as a formal genus of dinosaur within paleontological literature. While new dinosaur discoveries are made regularly, and names are sometimes proposed or used informally before official publication, Stackhousia does not appear in
Staurikosaurus Staurikosaurus (STORE-ih-koh-SAWR-us; “Southern Cross lizard”) is a genus of early carnivorous dinosaur that lived during the Late Triassic period, approximately 233 to 225 million years ago. Its fossils were discovered in the Santa Maria Formation in southern Brazil. The name refers to the Southern Cross constellation, prominent in the Southern Hemisphere where the dinosaur
Stegoceras: Profile of the Dome-Headed Dinosaur Stegoceras Stegoceras (STEG-oh-SEER-us; “Horned Roof”) is a well-known genus of pachycephalosaurid dinosaur that roamed North America during the Late Cretaceous period, approximately 77 to 75 million years ago. The name Stegoceras, meaning “horned roof” or “roof horn,” aptly describes its most prominent feature: a thickened, bony dome on top
Stegopelta: Profile of a Prehistoric Giant Stegopelta Stegopelta (STEG-oh-PEL-tah; “Roof Shield”) is a genus of nodosaurid ankylosaurian dinosaur that roamed North America during the Late Cretaceous period, specifically the Cenomanian stage, approximately 98 to 95 million years ago. The name Stegopelta is derived from the Greek words “stegos,” meaning roof or cover, and “pelte,” meaning
Stegosaurides Stegosaurides (STEG-oh-SAWR-eye-deez; “Stegosaurus form”) is a genus of thyreophoran dinosaur that lived during the Late Cretaceous period, approximately 72 to 66 million years ago, in what is now Argentina, South America. The name, given by German paleontologist Friedrich von Huene in 1909, refers to its perceived similarity to the more famous Stegosaurus. However, Stegosaurides
Stegosaurus: Profile of a Prehistoric Giant Stegosaurus Stegosaurus (STEG-uh-SAWR-us; “Roofed Lizard” or “Covered Lizard”) is a genus of armored dinosaur that lived during the Late Jurassic period, approximately 155 to 145 million years ago. Its fossils have been found mainly in western North America, particularly in the Morrison Formation, with possible remains also discovered in
Stellasaurus: Profile of a Prehistoric Giant Stellasaurus Stellasaurus (STEL-uh-SAWR-us; “star lizard”) is a genus of centrosaurine ceratopsid dinosaur that roamed what is now Montana, USA, during the Late Cretaceous period, around 75.2 million years ago. Its name refers to the star-like arrangement of horns and spikes on its bony neck frill. Stellasaurus was first officially
Stenonychosaurus: Profile of an Intelligent Prehistoric Predator Stenonychosaurus Stenonychosaurus (STEN-oh-NYE-koh-SAWR-us; “Narrow claw lizard”) is a genus of troodontid theropod dinosaur that lived during the Late Cretaceous period, about 76 million years ago, in what is now Alberta, Canada. The name refers to the distinctive sharp claw found on the second toe of its foot. Remains
Stenopelix: Uncovering the Mysterious ‘Narrow-Pelvis’ Dinosaur Stenopelix Stenopelix (STEN-oh-PEL-iks; “narrow pelvis”) is a genus of small ornithischian dinosaur that lived during the Early Cretaceous period, approximately 145 to 140 million years ago, in what is now Germany. The name Stenopelix comes from the Greek words “stenos” (narrow) and “pelyx” (pelvis), referring to its distinctively narrow
